Animation / Happy Heroes

The Supermen themselves, in all their crime-fighting, world-travelling glory.^CharactersThe Supermen, counter-clockwise from the bottom: Happy S., Sweet S., Careful S., Smart S., and Careless S. The non-Superman characters at the top are, from left to right: Shao Long, Fei, and Nine.

Universe is wide to fly
Flying home with happiness
To explore, let us go explore
We aim the highest in life!
Cloud is wafting gently
A dream that came out
A little bit outline
Go flying, go flying!
Fly over the night and dawn
La, la, la, la
The wind is blowing gently
Dream wings and meteors shot the sky across
Through time and space
And return to the place of dreams!

— Official translation of "Happily Flying Forward" 《开心往前飞》, the original theme song.

A relatively well-known TV show in China, Happy Heroes (开心宝贝), also known as Happy Friends in official English translations and later retitled in the original Chinese as 开心超人联盟 (Kaixin Chaoren Lianmeng, or "Happy Superman Alliance"), tells the story of a group of child superheroes who work to save the world Once an Episode from monsters and invading aliens and such. It was created in 2010 by one Weiming Huang/Leo Huang, the same person who created the especially popular Chinese cartoon Pleasant Goat and Big Big Wolf. It's an ongoing work with countless episodes.

Most of the adventures take place on Planet Xing, in a time where interplanetary travel is common. Planet Xing itself happens to be especially technologically advanced, and most of the population consists of robots that act exactly like humans with the full range of emotions and such (although there are humans too, as well as some aliens and anthropomorphic cows and other animals).

Planet Gray's expansion agency sent out two of its fighters, General Big Guai/Big M. and Corporal Little Guai/Little M., to conquer Planet Xing. With them, the two had five Jixie stones that, in addition to being able to give an inanimate object life, contain immense power, more than enough to conquer a planet. However, due to their ineptitude, Big and Little M. lose all but one of the stones, and crash-land themselves on the planet.

On Planet Xing, a genius engineer, Doctor Zhai/Doctor H., finds four broken vehicles while searching through a rubbish dump for things to fix. Unbeknownst to him, these vehicles were hit by and somehow combined with the four Jixie stones. When Doctor fixes them and then a broken power line falls on them, the four vehicles are revived into four children with superpowers. With Doctor as their surrogate father, Hero Kai/Happy S., Hero Hua/Smart S., Hero Tian/Sweet S., and Hero Chu/Careless S. defeat their enemies and protect the planet time and time again. Eventually, they are joined by a fifth, revived from the one stone that Big and Little M. had managed to keep- Hero Xiao/Careful S., and even later, Jialuo/Kalo, a former admiral of a now-destroyed planet, Planet Adeli. Despite the number of times that they fight, however, the Heroes never do discover the identities of their enemies.

Besides the series, four movies have been released - Happy Heroes: The Movie in 2013, Happy Heroes 2: The Battle of Planet Qiyuan in 2014, Happy Heroes: The Stones in 2022, and Happy Heroes Multiverse Rescue in 2024.

The Happy Heroes website can be found here. The Other Wiki has an article on it. There is also the Chinese version of The Other Wiki, Baike, which has an in-depth article on this show here. All three of these websites are in Chinese, however. For updates on upcoming events go to the official Weibo blog.

At least three English dubs of this show have been produced. One covers Seasons 1 and 2, is produced by the same production company that did the Disney English dub of the Pleasant Goat and Big Big Wolf season Joys of Seasons (and, indeed, shares some voice actors from that dub), and can be found on one of Alpha Group Co., Ltd.'s official YouTube channels, Lookus English, but since has been unavailable for now; that dub also aired on StarTimes Kids, an African channel. Another of these dubs covers Seasons 7 and 8 and is available on Miao Mi, an educational service that teaches Mandarin Chinese to young children, along with the original Chinese versions of the episodes; for this dub, however, you have to sign up for the service to see the episodes. The third dub is of Season 10 and the Happy Heroes and the Magical Lab mini-season, and not much info is known about it besides it being from Zoland Animation.

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"Troper S. transform!":

A-C

• 15 Minutes of Fame: In episode 9, Smart S. breaks the record for planet Xing Xing's fastest runner and becomes a celebrity who gains a lot of fans from it.
• 2D Visuals, 3D Effects: There are quite a few objects or sequences that are animated in CGI as opposed to the usual 2D animation. For one, the Supermen's Car Knights become 3D once they are replaced in Season 4.
• A Dog Named "Dog": Huo Haha owns a pet owl named Mau, whose name is a shortened form of "maotouying", the Chinese word for "owl".
• Absent Animal Companion: The commander of Planet Gray has a pet dog named Laifu who serves a major role in one episode of Season 7 before disappearing afterwards.
• Absurdly Huge Population: Planet Xing has 60 billion inhabitants according to Little M. in the first episode.
• Academy of Evil: The monsters have a school where they learn how to be proper monsters. There always seems to be a lack of funding though...
• Accent Upon The Wrong Syllable:
  • In Miao Mi's English dub, Little M. has a slight problem with placing the accent on the wrong parts of words when he speaks, if one listens closely enough. It's even more obvious in Season 8 episode 12, where when describing an artist named Van Golf to Big M. he says "His best known work is the Back of Sun-FLOW-ers!"
  • Also from Miao Mi's dub, the Global Leader and Big M. invariably pronounce "ceremony" as "cer-EH-mo-ny". Weirdly enough, since Smart S. pronounces the word correctly.
• Accessory-Wearing Cartoon Animal: The cows often wear a neckerchief or a wig.
• Accidental Hero: In Season 2 episode 42, Big M. and Little M. are mistaken by Happy S. to have saved the president of planet Xing Xing from other criminals. They were actually trying to capture the president themselves and only fended off the other criminals because they weren't amused with them acting on the idea first.
• Accidental Kiss: In Season 5 episode 35, a box hits a robot standing next to his girlfriend, causing their lips (or whatever the robot equivalent of lips is, anyway) to touch.
• Accidental Pervert: In Season 6 episode 21, Big M. seemingly gives a whistle towards a woman walking near him and Little M., and the woman takes it as him flirting with her and slaps him on the face. When told by Little M. that they should be focused on other things at the moment, Big M. has to explain that his whistle was meant to be a signal to the monsters to come out and fight the Supermen.
• Accidental Public Confession: In Season 13 episode 6, Big M. and Little M. team up with the Supermen, and Smart S. carries Big M. after he has been injured by a monster. He's very moved by how much the Supermen care about him... then he says he's faced much worse when he's tried to invade Planet Xing, immediately turning the Supermen against him.
• Accidental Time Travel: The plot of Season 9 is kicked off by the Supermen accidentally triggering a time machine Doctor H. built when he was younger. They're sent to the past, some time after young Doctor H.'s father had been abducted by aliens.
• Affably Evil: Huo Haha, although he is a villain, has a heart full of good will and genuinely cares about others to the extent that he's apologized to the Supermen for his Evil Laugh since he thinks it could have scared them and kept quiet in a library so that they could read, among other often trivial nice things.
• Ageless Birthday Episode: Episode 16 takes place on Miss Peach's birthday, but her age is never mentioned.
• Agitated Item Stomping: In Season 4 episode 35, Lightbulb Jr. gets fed up with Smart S. and stomps on a poster of him.
• Air-Vent Passageway: In episode 8, Big M. and Little M. crawl through an air vent to reach the heroes and make them sick with their cold.
• Alien Abduction: This was the fate of a young Doctor H.'s father. The abduction is shown in the first episode of Season 9, where Doctor H. throws together a Time Machine and tries to use it to go back in time and save him, with no success. Poor Doctor H. is obviously not amused.
• Alien Animals:
  • Dinosaurs and anthropomorphic cows are among the species inhabiting Planet Xing.
  • Dinosaurs are also seen on Planet Guling, a planet that is introduced in Season 6 and has a prehistoric theme.
  • Season 7 introduces the Miaolings and the Woofians, which are clearly meant to be cats and dogs respectively.
• Alien Autopsy: In the Show Within a Show in episode 5, Big M. and Little M. play aliens who die and have their bodies dissected in a hospital. When Happy S. gives up his role as the doctor who does the dissected, the director Mr. Lightbulb takes the job into his own hands, but realizes too late that the scalpel he's using is a real one rather than the rubber prop one, which is still in Happy S.'s hand. The ensuing pain does not sit well with Big M., who gets mad at Mr. Lightbulb over it.
• Alien Blood: Shapeshifter's blood is green, while Kalo's blood is blue.
• Alien Catnip: The inhabitants of Planet Wangcai cannot digest chocolate, not because they're dogs and the substance is poisonous to them, but because it's addictive to their species. This forms the basis of the plot of one Season 7 episode where Lele becomes addicted to the candy.
• Alien Invasion:
  • In Season 2 episode 2, Careful S., who is being manipulated by Big and Little M. to work for them, successfully deactivates the shield protecting planet Xing Xing. Cue spaceships from planet Gray making an all-out attack on the planet.
  • The Planet Gray forces manage to break through the shield and make it into Planet Xing to invade it again in Season 6 episode 16.
• Alien Sky: Planet Guling has multiple moons visible in the background, despite having only one sun.
• Aliens Speaking English: The inhabitants of planet Xing Xing all speak Chinese/English/whatever language perfectly fine.
• All Animals Are Dogs: The dinosaur Happy S. raises in Season 6 episode 11 sits up on its hind legs and gleefully catches sticks that Happy S. throws for it, much like a dog.
• All Just a Dream: By the end of Season 8 episode 34, Happy S. wakes up and realizes his run-in with Huo Haha was a nightmare he was having.
• All Your Powers Combined: In episode 40, Smart S., Sweet S., and Careless S. combine their Smart Magnet, Sweet Protection Bubbles, and Careless Missile respectively with each other to attack the time-space monster.
• Alliterative Name: The main antagonist of Season 8 is named Huo Haha, which repeats the letter "H".
• Alliterative Title: Happy Heroes repeats the letter "H".
• Amazing Technicolor Wildlife: The ants in Season 5 are mostly colored a reasonable brown, with the exception of the pink ant girl and the blue-green queen.
• Ambiguously Gay: Teacher Know-It-All blushes at the sight of Professor Limen's muscular body in Season 5 episode 45.
• Amnesia Episode: Careful S. loses his memory after a collision with a spaceship from planet Gray in the first episode of Season 2. Big and Little M. manage to get the amnesiac Careful S. to work for them.
• Amnesiac Villain Joins the Heroes:
  • Inverted in the first couple of episodes of Season 2, where an amnesiac Careful S. is compelled to work for the villains Big and Little M.
  • Played straight in Season 2 episode 50, where Big M. sustains a collision, forgets he's a villain, and helps the heroes to defeat the shark that he himself sent out beforehand.
• An Ice Person:
  • Season 2 episode 11 features an ice monster that can freeze objects by breathing ice on them.
  • The penguin monster in Season 2 episode 40 has the same ability.
• And Now You Must Marry Me: In Season 8 episode 12, an art teacher named A-huan agrees to give Big M. drawing lessons on the condition that if the lessons don't stick with him, he has to marry her. Big M. has to deal with her getting all clingy and kissy with him during the art lessons, but he manages to improve his drawing skills enough to avoid having to marry a visibly disappointed A-huan.
• And Your Reward Is Infancy: At the end of season 10 episode 28, when Happy S. breaks the gun that can age its targets, it ends up hitting Careful S. and Kalo, turning them into babies. Cue Downer Ending.
• Androcles' Lion: In Season 4 episode 10, while cleaning a polluted lake, Smart S. notices a fish trapped in a net and sets her free. The fish is actually a mermaid with water powers, and she takes this form when Big M. orders her to go after Smart S. Once she realizes who Smart S. really is, she returns his favor by rescuing him from drowning in the water near the end of the episode.
• Animal Assassin: In Season 2 episode 13, a cat from Planet Gray is sent to kill Careful S., who takes in the cat upon it being hurt and cares for it.
• Animal Jingoism: The ancient enmity between the Miaolings (cats) and the Woofians (dogs). It was later revealed to be because of something silly from when they still lived on the same planet.
• Animate Inanimate Object:
  • In episode 35, the gang meets an anthropomorphic piece of wood who grants wishes.
  • In Season 2 episode 20, Doctor H. finds an anthropomorphic bottle genie who also grants wishes. He's so similar in appearance to the aforementioned wish-granting wood that Big M., who initially found the bottle, even comments about the similarities between the two.
• Animesque: Characters often make facial expressions that wouldn't look out of place in an anime (such as a Sweat Drop or Cross-Popping Veins appearing on their head).
• Anonymous Benefactor: In Season 4 episode 44, a person hidden in a bush costume works to keep Happy S. from harm, saving him from booby traps and a man-eating plant monster, as he searches for the location in a childhood photo of Doctor H. that he accidentally destroyed. That person turns out to be Doctor H. himself, who later explains that he went through a similar journey with his father that culminated in the photo being taken.
• Arc Number: 4451 in the tenth season, shown many times mostly on electronic screens to only Careful S. It was confirmed that the series of messages were from Kalo, warning of the undercover Big M. and Little M.’s plan to bring in an ultimate weapon that could devastate the welfare of people on Planet Xing.
• Argument of Contradictions: In episode 25, Big M. holds Mr. Lightbulb hostage so he can get his picture taken for the newspaper. Mr. Lightbulb would rather the kidnapping be recorded on live TV, since it would increase his ratings, and he and Big M. argue "Take a photo!" "We can film it!" until the feud devolves further, somehow turning into a boxing match within a few seconds.
• Arm Cannon: In Season 3 episode 29, the evil duplicate of Careful S. wields an arm cannon on a wrist device he's wearing as he fights the real Careful S. and his other duplicates.
• Arson, Murder, and Jaywalking:
  • In Season 2 episode 16, Big M. lies that he wants to quit working at the school. Someone hears him and tells him he hasn't paid his rent and utility bills, another appears afterward saying he also hasn't paid his property management fees, elevator and broadband fees, or cleaning fees, and then a third one appears and mentions that he hasn't paid for two onions he purchased earlier.
  • In Season 2 episode 26, Little M. becomes worried about Big M. possibly being no match for Shao Long, describing to him that Shao Long is the "strongest man alive" and is unmatched by others. What breaks the general into believing he's a legitimate threat? He's handsomer than Big M. is.
• Art Initiates Life: Season 8 episode 12 revolves around a magic pen that Careful S. purchases from a shopkeeper; anything drawn with the pen comes to life as long as the drawing is realistic enough. Huo Haha's owl, Mau, takes the pen and brings it to Big M. for him to use, with the only problem being he's a Terrible Artist and needs lessons from an art teacher to learn how to draw properly and make his drawings come to life.
• Art Shift: A more detailed art style goes into effect starting from Season 10.
• Art Evolution: The art gets slightly more detailed overtime. By Season 10, there's an outright Art Shift to a more detailed art style.
• Artificial Script: Parodied. Dog Planet's written language is literally just normal Chinese but with the end-bulbs characteristic of a Stock Femur Bone placed all over the Chinese characters, and Cat Planet does the same thing but with fishbones instead. Despite the minimal differences between the two writing systems, Ambassador Miao still has trouble reading a letter from Ambassador Wang written in "dog language" until Happy S. erases the dog bone bulbs and writes fishbones in their place.
• Artsy Beret: The blind artist from Season 7 episode 30 wears a red beret with a pencil decoration on top of it.
• Ash Face: Any time a character is singed by fire, electricity, or a similar source, the worst they get is generally a lot of ashes covering their body, including their face.
• Asleep in Class: The trope is alluded to in Season 8 episode 24. Huo Haha suggests setting up contraptions that play annoying sounds nonstop to cure Big M. and Little M.'s "struck by thunder if too close to each other" curse, with Little M. having one that plays the sound of a school bell ringing. Little M. becomes sleepy as the machine is playing its sound, commenting that he gets sleepy every time he hears the school bell.
• Ass in a Lion Skin: Variant. In Season 7 episode 15, a tiger named Fat Tiger runs away from his circus and refuses to accept himself as a tiger, instead claiming that he is a cat. (He means a house cat, but then this brings up the question of how tigers are already cats to begin with.)
• Attack of the 50-Foot Whatever: In episode 31, Big M. and Little M. put on dream glasses that the heroes threw away. The scenario Doctor H. placed in the glasses has Big M. and Little M. grow to a massive size, which they use to destroy the city.
• Author Avatar: Leo Huang gets a cameo in the first movie as a chef and the second movie as a scriptwriter superhero. He also sometimes appears in the main series, as a sketch artist for example.
• Axes at School: Deconstructed in Season 5 episode 22, where Careless S. uses his weapons in Superstar School. While it's true that he uses them to fight villains, Careless S., being... well, careless, often ends up destroying parts of the school building by accident in using his guns and whatnot. Headmaster Tele acts accordingly and confiscates Careless S.'s weapons... not that it stops Careless from hiding weapons throughout the school.
• Baby Morph Episode: In Season 3 episode 48, Little M. accidentally turns Big M. into a baby using one of Doctor H.'s inventions. Careless S. takes in the babyfied Big M. and cares for him for most of the episode.
• Babysitting Episode: In episode 48, Big M. is hired to babysit the heroes when Doctor H. goes to an important meeting. Big M. uses this as an opportunity to enact an evil scheme that involves disguising himself as Doctor H.
• Back from the Dead: One character comes back to life in one season after having been killed in a past season.
• Bag of Kidnapping:
  • In Season 6 episode 49, Big M. attempts to capture Buding using a burlap bag, only to capture a bee's nest and a dragon instead, and then completely fail to catch anything when she's holding a rabbit.
  • In Season 8 episode 6, Big M. suggests that he and Little M. kidnap the King by placing him a bag.
• The Bad Guy Wins:
  • In season 3 episode 51, Meimei manages to steal the book (which is revealed to be a recipe book) and cooks for Big M. and Little M.
  • Played as All Justa Dream near the end of season 8 episode 34, but not the actual ending of the episode. Big M. gets his hands on the Magic Correction Paper and tries to prank Happy S. again to get the three magic wands, but Happy S. knows his diguise already and kicks him out of the house, and Big M. cries that the wands are gone.
• Bait-and-Switch: This show loves to pull bait-and-switch-type jokes. One of the earliest instances is at the beginning of episode 6; the heroes ask Doctor H. to take them outside to watch shooting stars in the sky. He lets them watch the shooting stars, and even comments that they look beautiful, before it's revealed that it's just a documentary on shooting stars he found online.
• Bait-and-Switch Comment:
  • Smart S. makes one at Sweet S. in Season 8 episode 17 in regards to her thinking she has the ability to predict people's misfortunes.
  Sweet S.: I don't know how to explain this, but it's like I can forsee all the bad things that will happen! Do you know what it means, Romeo?
  Smart S.: I know! It means that... you bring trouble wherever you go.
  • The King makes one in Season 8 episode 20 when he has the Supermen try to hit him with staffs to find which ones are the real ones... right after having his pain transferred to Big M. after having his leg hairs shaved for the magic spell to do so.
  The King: I suspect the stylist did something to me! The next time I see him... I'll give him a raise!
• Balloon Belly: In Season 2 episode 13, Big M. and Little M.'s bellies become larger than usual after they eat a lot of meat prepared for them by a cat.
• Balloonacy: In Season 2 episode 45, Happy S. and Big M. give Dagger Sharpie so many balloons that he floats up into the air.
• Banana Peel:
  • Smart S. trips over a banana peel in episode 7 of Season 2, hurting him to the point that he can't perform his role as the prince in the upcoming school play. This gives Big M. the idea to make a machine that dispenses banana peels to make everyone slip and sabotage the play.
  • In Season 5 episode 3, a monster the Supermen are fighting slips on a banana peel and crashes into a wall.
  • In Season 8 episode 6, Big M. slips on a banana peel and bumps into Careful S., who lets go of the fire wand he was holding. The wand falls into a box of duplicate wands, unfortunately for the Supermen since they had just figured out which of those wands was the real one.
  • In Season 8 episode 16, Big M. throws several banana peels on the ground to slip up the knights chasing after him and Little M.
  • In Season 8 episode 17, Smart S. slips on a banana peel and falls into a nearby hole when Sweet S. meanly tells him to go away after he tries to ask her for a prediction on what will happen to him next.
• Bandage Mummy: In episode 40, after the other heroes accidentally hurt her, Sweet S. is shown covered almost entirely in bandages.
• Band Episode: In Season 7 episode 46, Smart S. wants Careful S. to form a band for an upcoming talent show, giving Doctor H. the idea to teach all the Supermen how to play musical instruments so they can compete. Big M. and Little M. compete in the talent show as well since the prize is a Chinese instrument made with rare materials.
• Banging Pots and Pans: At the beginning of Season 2 episode 8, Doctor H. bangs a ladle against a pot in an attempt to wake up the heroes.
• Bar Slide: In Season 9 episode 32, Careless S. goes to a saloon in the Wild West and sees one of the cow patrons successfully catching a mug that is slid to him this way. Careless S. orders a glass of milk and tries to catch the cup as it slides... only to fail and end up ordering more glasses of milk, which he also fails to catch.
• Baseball Episode: Similar. Season 2 episodes 17 and 18 form a two-part episode where the heroes play against a team of monsters in a game of basketball.
• Bat Out of Hell: One of the magic abilities Huo Haha can use is to summon a bunch of bats, as shown in Season 8 episode 19 where he summons them to surround Happy S. and distract him from their battle.
• Bathroom Stall of Overheard Insults: A variation happens in season 10 episode 37, where Smart S. overhears Big M. and Little M. discussing their new evil plot while doing his business in a public bathroom.
• Battle Boomerang: The two wings on Happy S.'s helmet can come off to form a deadly accurate boomerang.
• Battle in the Center of the Mind: Season 2 episode 38 has Doctor H. and the heroes go inside Careless S.'s mind to remove two CPUs he implanted in him that are making him smart enough to stay annoyingly one step ahead of everything. The CPUs happen to be represented by palette swapped Careless S.'s who wind up fighting the heroes.
• Be Careful What You Wish For: In Season 2 episode 20, Doctor H. uses the bottle genie to make a wish that he's married to Miss Peach. He gets the wish, but with the trade-off that the heroes are now bullies and/or criminals due to Doctor H. ignoring them. He then clarifies that he wants both to be married to Miss Peach and to have the heroes be good. This also works out fine, except that Doctor H. now has an incurable disease and could pass away from it at any second. He gets back to the genie just in time to mention that he wants to live through the experience as well. For his final wish, Doctor H. and Miss Peach become 100-year-old senior citizens, making Miss Peach less beautiful - at which point Doctor H. gives up entirely and begs for everything to go back to normal.
• Beach Episode: Episode 24 has the heroes go to a beach to investigate a Sea Monster which is said to live there.
• Beard of Sorrow: In Season 8 episode 14, Big M. grows a five-o'-clock shadow when he becomes depressed from hearing a former classmate of his who was considered "useless" has now graduated, become a commander, and successfully taken over three planets.
• Bears Are Bad News: In episode 10, a bear attacks Big M. and makes off with his bread. It comes back at the end of the episode, this time going after his fish.
• Bedsheet Ghost: At the beginning of Season 4 episode 27, Little M. goes around in a cheap ghost costume scaring people in the city as part of Big M.'s evil plan to take over Planet Xing.
• Being Watched: In Season 8 episode 9, when Huo Haha sets up the crystal ball for Big M. to use, it shows Happy S. and Smart S. playing cards. Happy S. says he gets the feeling someone is staring at them, and Smart S. realizes that... the audience from around the entire country is now staring at them, at which point the frame zooms out to show they're on a television screen being watched by several viewers.
• Beneath the Mask: Careful S. comes off as cold but is really quite caring, shown several times throughout the series. He tends to hide this side from even his friends, however.
  • Once, for example, he took in and cared for an injured cat even though he is allergic to cat hair.
  • He once pretended to be Doctor H.'s deceased father to comfort him.
  • He also once bribed a stranger with a lollipop to help Smart S. regain his self-confidence.
    Kalo: He doesn't talk much, but he's still willing to be friends with everybody.
• Big Ball of Violence:
  • In Season 2 episode 11, when some townsfolk get mad at Happy S. for causing trouble by magnifying their stuff, they attack him. The attack forms a big ball of dust with the heads, arms, etc. of the townsfolk sticking out.
  • In Season 8 episode 18, a few village folk try to seek shelter in the same place, but two of them get into an argument over who bumped the other first and wind up brawling it out, creating a cloud of dust with their heads, arms, and legs popping out in different places.
• Big Eater: Big and Little M. rarely get to eat anything, so when they do find food, they usually gulp it down pretty quickly.
• Big Guy, Little Guy: And their names are even Big M. and Little M. to match their size contrast, no less.
• Big Honking Traffic Jam: Season 10 episode 3 begins with a traffic jam, complete with frustrated drivers honking their horns, being interrupted by one of Big M.'s monsters flipping all the vehicles into the air, followed by Smart S. saving a little girl from being smashed by one of said vehicles.
• The Big Race: Season 2 episode 52 is about the heroes participating in a car race.
• Big Shadow, Little Creature: In episode 6, the Supermen are investigating outside to find what cut off Doctor H.'s internet. Happy S. spots the shadow of what looks like a giant caterpillar-like monster, only for him and the other Supermen to find that it's just a normal caterpillar chewing on the wires.
• Big, Thin, Short Trio: The addition of Huo Haha to the main villains rounds them out into one, with Big M. being the big one, Huo himself being the thin one, and Little M. being the short one.
• Binary Suns: Planet Gray has a blue icy sun and a crimson-colored sun that are both controllable via a temperature adjustment room.
• Bindle Stick: The title card of episode 20, "Running Away from Home", depicts a bindle stick.
• Binocular Shot: In Season 2 episode 51, we get a shot of Happy S. and the new teacher through binoculars as Big M. is looking at them.
• Bird-Poop Gag: In Season 8 episode 8, one of the curses Merlin casts on Smart S. causes bird poop to drop on him.
• A Birthday, Not a Break: Season 7's two-part finale involves everyone wanting the Supermen to stop bothering them and leave Planet Xing. Doctor H. manages to set up a ship to help them evacuate... except this is all right on their birthday, with citizens on the planet preparing a party for when they get back.
• Bittersweet Ending: The end of the "Legend of a Hero" arc in Season 7. Sure, they drove out the invaders, but at what cost? Kalo's life, for he was the one who sacrificed himself to save the planet. Needless to say, the heroes are still in tears despite the enemy being driven away.
• Blatant Lies: An episode of Season 7 has Happy S. ask Ambassador Wang if she's going to deal with Ambassador Miao calmly and not hurt him. She asks him if she's the kind of person who would do that... and not only is she holding weapons as she says this, there are things like nooses being pushed into view in the background.
• Bloodless Carnage: There are certain episodes where Big M. accidentally gets himself stabbed with a knife or similar object. This being a children's show and all, there's no visible bleeding where he gets stabbed.
• Blow You Away: City of Mystery features a villain named the Wind Warrior who, as suggested by the name, can produce tornadoes and use similar wind-based attacks in battle.
• Blown Upward by a Blowhole: In Season 8 episode 31, Happy S. and Pino arrive inside a whale, since Pino had stated one of the magic staffs sought after by the Supermen was there. Once they appear, Big M., Little M., and Huo Haha, who were all in the whale's belly beforehand, are sent flying when the whale shoots water through its blowhole.
• Blue Means Cold: Planet Gray has two suns, one of which is blue and cold enough to freeze the Supermen's Car Knights within seconds.
• Blush Sticker: Miss Peach has permanent blush stickers.
• Boxing Kangaroo: In Season 7 episode 22, Ambassador Miao explains one of his ancestors to his daughter Keke and says his nine pockets were a big deal when he was alive and gave him a special rank. Keke comments on a student of hers that has only one pocket - he's a kangaroo wearing Red Boxing Gloves according to the thought bubble that appears near her head.
• Brain Uploading: In Season 6 episode 27, Big M. receives an injury that leaves his body completely unmovable, so he has his consciousness uploaded to a big robot. He eventually decides he likes his robot body better than his human body, but finds himself unable to stop fending off Little M. when he implores him not to go through with an installation that would cause him to become a full-time robot, permanently.
• Brainwashed and Crazy: This is the effect of the Planet Gray virus in Season 5, corrupting infected humans and robots and transforming them into monsters once the virus is activated within them.
• Bread, Eggs, Breaded Eggs: In Season 7 episode 6, Careful S. is offered medicine by Ambassador Miao, but rejects it since he doesn't take Chinese medicine. Miao tries to explain that it isn't Chinese medicine, and Careful S. states that he doesn't take Western medicine either. Miao explains further, saying that it's actually a mixture of both Chinese and Western medicine.
• Breaking Bad News Gently: In Season 7 episode 28, Little M. tries to bring Big M.'s attention to a slip stating he's lost his job as a general by indirectly giving it to him, so as not to witness him having a heart attack over it. His attempts fail due to various outside factors distracting Big M. from noticing the note.
• Breaking the Fourth Wall:
  • In one episode, Professor Limen repeatedly tells the audience "don't try this at home". To the others, it just looks like him talking to a camera with a screen set up behind him. He also does this in some future episodes.
  • Smart S. also tells the audience once in Season 8: "Hitting people on the head hurts a lot! Don't do this at home!" These are probably a result of that one time two kids in China tried replicating something they saw in Pleasant Goat and Big Big Wolf, and ended up seriously injuring themselves.
  • In Season 8 episode 9, Little M. tells Big M. that some of the viewers have pointed out that whenever they're able to eavesdrop on important secrets, they rely on it by pure chance. Later in the same episode, Little M. tries to lip-read what Happy S. and Smart S. are saying and comes to the conclusion that they keep saying "papa" because of the way their mouths move, leading to Big M. angrily yelling at him that "Every cartoon character moves his mouth like this!"
• Breath Weapon: The ice monster in Season 2 episode 11 and Penguin Monster in episode 40 of the same season both have ice breath.
• Brick Break: In Season 7 episode 14, this is one of the things Happy S. has his students do as he teaches them some kung-fu moves. As Little M. goes to break the boards, Big M. tells him to pretend to hurt his hand to make the others think the training isn't working well enough; Little M. obliges by very slightly touching his finger against the boards and faking an injury from it.
• Brick Joke: In Season 7 episode 16, Happy S. is not happy to see what looks like Lele failing to repress his habit of chasing things thrown into the air and throws a bone he had wanted to give him as a gift into the sky. It takes until the end of the episode for the bone to come back and hit Happy S. in the head.
• Broken Record: In Season 6 episode 31, the first proper "conversation" that Careless S. has with Xiaolun is just them repeating the same greetings over and over. This lasts for quite some time, understandably catching Professor Limen and the Mayor of the Planet Guling town off-guard.
  Careless S.: My name is Careless S.! And you?
  Xiaolun: [gives a slight chuckle] My name is Xiaolun! What's your name?
  Careless S.: My name is Careless S.! And you?
  Xiaolun: My name is Xiaolun! What's your name?
  Careless S.: My name is Careless S.!
  [nighttime falls on Planet Guling]
  Xiaolun: What's your name?
  Careless S.: My name is Careless S.! And you?
  Xiaolun: My name is Xiaolun! It was pleasing talking to you for a day!
  Careless S.: I'm pleased too! Let's continue tomorrow!
  [in the background, Professor Limen and the Mayor both faint]
• Brought to You by the Letter "S": When Headmaster Tele was a superhero, he wore a costume with a big "T" on the front.
• Brown Bag Mask: In Season 7 episode 36, Lele covers his face with a brown bag when he gets embarrassed over a story in the school magazine about him cheating on a math problem.
• Bullet Seed: The pumpkin monster in Season 4 episode 12 spits pumpkin seeds at Happy S. during their battle.
• Burning with Anger: In Season 6 episode 46, Big M. becomes frustrated at Suspicious S. missing the answer to the question of who saved him (Big M. himself had saved him earlier, which Suspicious S. hasn't yet realized) and has a flame on his head, representing his anger, that Little M. fans.
• Butt Biter: One episode has Big M. being bitten on his bottom by a mechanical dog.
• By the Lights of Their Eyes: In episode 8, Big M. and Little M. are trapped in a big pipe by a robotic guard dog. The dog nails some planks of wood onto the open end of the pipe to keep them from getting out; when the inside of the pipe gets dark from this, Big M. and Little M.'s eyes are visible, but nothing else.
• By the Power of Grayskull!: "_____ S., transform! _____ Car Knight!
• Call-Back:
  • In Season 7 episode 4, Teacher Know-All notices the Supermen have retained their habits from Planet Guling, which they visited in the previous season. The episode is rife with flashbacks to Season 6 episodes.
  • Season 8 episode 7 directly references, and has its plot set up by, Season 7 episode 50 where Kalo sacrifices himself to save Planet Xing from invaders. In the Season 8 episode, Happy S. discovers a notebook where Careful S. has written a story where he's the one who sacrificed himself instead of Kalo, who is experiencing similar distressed side-effects to what the actual Careful S. is feeling as a result.
• Calling Your Attacks: The heroes say the names of their attacks when they use them.
• Camera Abuse: In the title card of Season 6 episode 3, a book with boosters carries off Little M. as it flies through the air, sending Little M. flying into the screen and creating a crack in it.
• The Can Kicked Him: In Season 2 episode 9, the garbage truck monster tries to attack the heroes by throwing a dirty toilet at them. They catch the toilet just in time and even give it a quick cleaning.
• Cannot Tell a Lie: Inverted and invoked by Big and Little M. in Season 2 episode 10. The two use a flying saucer that zaps people into being unable to tell the truth; the affected people gain ten pounds for every truth they do tell.
• Can't Take Anything with You: Inverted; after they return to the future, anything the Heroes leave behind vanishes.
• Cargo Ship: Played for Laughs in-universe. In Season 10 episode 5, a monster drops a gun in front of Careless S., whose first instinct - being an inventor and all - is to gush over it, complete with heart-shaped eyes and Cherry Blossoms in the background.
• Cartoon Bomb: One such bomb appears in Season 4 episode 32. Little M. is carrying several of them, and one of them drops next to a cannon; Little M. lights the bomb instead of the cannon, causing it to blow up on he and Big M.
• Cartoon Juggling: Big M. is briefly shown juggling balls in the "shower" fashion of cartoon juggling in the title card of Season 3 episode 33.
• Cartoon Meat: In the Season 10 end credits sequence, one of the characters that passes by Careful S. is Big M., who is carrying a stick with manga meat tied to it with a string. Little M. chases after the meat, trying to eat it.
• Cassandra Truth: In Season 8 episode 31, Happy S. meets a wooden puppet boy named Pino who says he is looking for his nose and learns that said puppet boy is a notorious Consummate Liar. By the time he looks inside a whale's belly to look for his nose, Happy S. begins to think Pino might not be telling the truth and stops helping him, only to find the bakery he described in his backstory and hear its owner explain everything Pino stated earlier. Happy S. realizes his mistake and goes back to help Pino again.
• Casual Interplanetary Travel: Planet Xing has a train system that travels through space to other planets, but makes it to destinations as fast as a normal train ride would, with how far planets are from each other not being considered.
• Cats Hate Water: In Season 7 episode 32, anthropomorphic cat Ambassador Miao is used as fishing bait by Ambassador Wang and doesn't enjoy the experience, repeatedly telling her he hates the water.
• Catapult Nightmare: At the beginning of Season 8 episode 7, Careful S. sits upright in bed after having a nightmare about Kalo and the sacrifice he made to protect Planet Xing.
  • In few of the early episodes of season 14, Smart S. is also done the same thing after having nightmares about Happy S. being defeated at the hands of The Dark Demon back in the end of season 13.
• Catching Some Z's: Often, characters will have trails of Z's emitting from them when they are sleeping. The Z's themselves have closed eyes as if they are sleeping too.
• Cat Up a Tree: In episode 2 of Season 12, Careless S. tries to help a girl by getting her pet cat down from a tree, but his weapon doesn't reach far enough to grab the animal and Sweet S. saves it from falling to the ground before Careless S. can do so.
• Cats Are Mean: Keke occasionally does some borderline cruel things to Lele.
• Caught in a Snare:
  • In Season 2 episode 23, Big M. is caught in a "rope caught on leg" type snare set up by Little M.
  • In Season 6 episode 19, Big M. captures Sweet S. in a snare. Or at least, he thinks it's Sweet S., but then they turn around to reveal they're one of the masked Guling citizens.
• Centrifugal Farce: In Season 10 episode 1, one of the incidents that Happy S. and his fellow Supermen ignore on their way to school is a bunch of people being sent driving at high speed on a malfunctioning roller coaster, with the roller coaster car creating a large flame in front of it from how quick it's going. Happy S., missing the cue to help them, responds with "They're having so much fun!".
• Chain of People: Careful S. pulls this off by himself once to avoid falling into lava.
• Chained Heat: In Season 5 episode 24, Smart S. accidentally throws an electric rope onto Careful S. and Little M., leaving them stuck together. They spend most of the episode trying to find a way to get unstuck.
• Character in the Logo: Happy S. is in the original logo.
• Character Name and the Noun Phrase: The mini-seasons Happy Heroes and the Magical Lab and Happy Heroes and the City of Mystery. In this case it's more like "Character Group Name and the Noun Phrase".
• Characterization Marches On: In episode 6, Doctor H. goes outside to find what disconnected him from his internet before he could read Miss Peach's e-mail. In later episodes, this would be quite out of character for him, as in Season 3 he's established to be a hikikomori with an extreme fear of going outside.
• Chasing a Butterfly: In Season 6 episode 11, Happy S. finds a butterfly and is about to chase it when the old man he is visiting warns him not to, explaining that the butterfly will take him to a confinement swamp filled with monsters. Happy S. completely ignores his instructions and chases the butterfly anyway.
• Cheaters Never Prosper: Subverted. In episode 44, Doctor H. tries to take muscle-enhancing drugs to help him win the fitness competition. The other heroes try to convince him against it, to no avail; however, when he makes it to the competition, Doctor H. ultimately decides not to use the drugs.
• Cheeky Mouth: The Supermens' mouths are fully visible even when they are viewed from the sides.
• Cheer Up Episode: In Season 8 episode 14, Big M.'s confidence goes down the drain and he gets very depressed when he learns his dim-witted former classmate has become a successful planet invader, unlike him. Little M. spends the episode finding some way to cheer up Big M. and get him back to his normal self.
• Chekhov's Gag: The time bomb Careless S. misplaces in Season 2 episode 37 initially appears only for a quick joke that doesn't contribute much to the episode's plot. Later, Smart S. uses it to defeat the shapeshifting monster by getting it to transform into a time bomb.
• Chekhov's Gunman: Season 3, episode 12, we see Caesar standing next to Adeli's global leader in a flashback. He's not even given a name, just mentioned to be manipulative. 243 episodes later, he's revealed as the Big Bad of the main arc of Season 7, and was responsible for Kalo's death.
• Cherry Blossoms: In Season 10 episode 5, a monster drops his gun. Careless S. immediately notices the gun, and the resulting scene plays out like he's literally fallen in love with it, complete with cherry blossoms floating in the background as he's admiring it.
• Child Hater: In Season 8 episode 15, Happy S. thinks he has the location of one of the elemental wands pinned down to a village populated by an adult tribe that hates children so much they forbid them from entering. Whenever any babies are born within the tribe, they're immediately sent out and not allowed to re-enter the village until they're grown up. Later in the episode, it's shown that the chief of the tribe is more afraid of children when Smart S. confronts him.
• Child Prodigy: As shown in Season 9, Doctor H. was able to build working inventions even as a child.
• Chiptune: A commercial for the show has the theme song in this genre.
• Circus Episode: Season 3 episode 33 is about Big M. controlling a magician from a circus. Careless S. mysteriously disappears while watching the mind-controlled magician's act, and Smart S. tries to find him.
• Class Trip: In Season 3 episode 4, the Superstar School students are taken on a field trip to find one of Planet Xing's ethnic peoples, called the Blue Stars. Only problem is, this is at the request of Smart S., who made them up and goes through the effort of hiring actors to represent the Blue Stars to keep it convincing. It isn't until one of Big M.'s monsters appears and is mistaken for a Blue Star, though, that things really go south.
• Cliffhanger: At the end of every season since Season 4.
  • Season 5's introduced the three superheroes of a faraway, mysterious planet.
  • Season 6's had a brief scene about the ambassadors and Keke of Planet Miaomei.
  • Season 7 ended with the planet-president falling strangely ill.
  • In season 8, Kalo's silhouette is found imprinted on the wall, after a television with his colors and complexion saved Sweet S..
  • The one ending Season 9 has yet to be resolved, where young Doctor H. appears to hear Happy S.'s voice coming from offscreen, even though the Heroes have already permanently returned to the future.
  • Season 10 concluded with Happy S' Car Knight getting poisoned with a monster solution, the car knight's eyes briefly turning red.
  • Season 11, which also has yet to be resolved, had two: the two villains reveal their part in the destruction of a planet, and a mysterious person rescues the two villains.
• Clingy MacGuffin: Careful S. spends much of Season 5 episode 19 with a birdhouse stuck on his head after catching a bunch of items Happy S. was holding. The other Supermen make multiple attempts to free him from the birdhouse, to no avail; Careful S. eventually decides not to worry too much about it and goes about with his business casually donning the birdhouse on his head until the end of the episode, when a monster destroys it.
• Clip Show:
  • There's a season called Funny Highlights which is clips from earlier episodes.
  • There are a few episodes that are clip shows sampling episodes from earlier, such as Season 2 episode 26 - where the heroes mention their greatest accomplishments during an interview, with these accomplishments shown as clips from previous episodes - and Season 7 episode 4, which has a bunch of flashbacks to Season 6 showing that the heroes need to unlearn their habits from Planet Guling, the central focus of the season being sampled in that episode.
• Close-Call Haircut: In Season 2 episode 21, Careless S. tests out his new weapon by shooting a missile at a tree. Big M., who is hiding behind a bush right in front of the tree, is nearly hit by the missile, but it just barely misses him and cuts off the top of his hair in the process.
• Cobweb of Disuse: In certain episodes, the characters accumulate cobwebs after standing or sitting in the same place for a long time.
• Coconut Meets Cranium:
  • The title card of episode 38 shows Doctor H. being hit on the head by a coconut.
  • In another episode, Big and Little M. had drunken coconut milk from one coconut shell each, and had tossed them out the window. Poor Sad S. and Sick S. were knocked out when their heads were hit, with Oversensitive S. left wondering what happened and immediately on alert for a hidden assassin. At the end, Big and Little M. were also hit in the head with coconut shells.
• Coincidental Accidental Disguise: Doctor H. was on his way to rescue Sweet S. when he ran into some clotheslines. By the time he gets to her, he's wearing all black, with a black top hat and his face hidden. Sweet S. spends a couple days dreaming about her mysterious savior, and never learns his identity.
• Cold Turkeys Are Everywhere: In episode 46, Big M. and Little M. are hungry but don't have any food to eat. Little M. suggests that if they don't think about food, their hunger will go away, and the two try to find something to watch on TV to get their minds off the matter. Every show they see on the TV is related to food in some way.
• Colony Drop: In episode 14, Smart S.'s magnet becomes so overpowered that it very nearly sends Planet Gray flying into Planet Xing. Planet Gray native Big M. nevertheless gets excited since this could be his chance to see his home planet again.
• Color-Coded Characters:
  • Happy S. - red
  • Sweet S. - pink
  • Smart S. - green
  • Careless S. - blue
  • Careful S. - black/purple
• Color Failure: A common character reaction to something especially absurd is for them to go completely black-and-white in color as they stand there, shocked. An entire episode of Season 7 not only lampshades this and similar takes experienced by the characters, but has it weaponized against the Supermen (it's apparently the result of "anti-inertia thinking", wherein a rational thought and an absurd thought collide to stun the shocked onlooker for a second or so), with the color failures specifically being one of the most common takes used to demonstrate this phenomena.
• Combination Attack: Various ones. For example, in episode 40, Smart S., Sweet S., and Careless S. combine their Smart Magnet, Sweet Protection Bubbles, and Careless Bomb respectively with each other to attack the time-space monster.
• Combining Mecha: Happy S.+ Sweet S. and Smart S.+ Careless S., once. At the end of the 1st movie with Happy S.'s car knight.
• Comedic Underwear Exposure: In Season 3 episode 28, Big M. gives Little M. instructions to cut the electrical circuit inside a building. He cuts Big M.'s belt instead, exposing his underwear.
• Comedic Work, Serious Scene: The series is a light-hearted superhero story with a comedic twist, but will occasionally pull out some legitimately down-to-earth scenes, perhaps the most famous being in Season 7 where everyone mourns the loss of one of the characters after they do a Heroic Sacrifice.
• Comically Missing the Point:
  • In episode 3, the microwave monster defeats Happy S. while he's in his mecha. Happy S. and Sweet S. then mention how dangerous the monster really is, to which Smart S. replies "I don't believe it! ...look at this, he totally messed up my hair!"
  • In episode 13, Big M. is watching where the heroes are through a little robot fly camera. He notices the magic beans they've found and says that he thinks the heroes may have found something new. Little M.'s response is "Yeah, I've never seen so much ice cream before!", referring to a bowl of ice cream located right next to the beans.
  • In Season 8 episode 19, Big M. purposefully takes off his cloak and asks Happy S. if he notices anything different about him. Happy S. guesses that the Planet Gray symbol on his headband has fallen off, his pants have fallen off, and he's lost a backpack before Big M. gives up and just tells him his cloak is what's missing.
• Company Cross References: Pleasant Goat and Big Big Wolf is referenced in a few episodes, including a few from those that were produced after Alpha Group Co., Ltd. bought its production company Creative Power Entertaining (e.g. in one episode, Aqiang dresses as a sheep and says "Dearest sheep, I've arrived!" before being hit by a frying pan like how Wolffy is often hit by one).
• Concealing Canvas: In Season 5 episode 22, Careless S. has a bunch of weapons hidden around the school after Headmaster Tele tells him not to use them on school premises. One of them, a bomb, is hidden in a small space tucked behind a picture of the Headmaster.
• Confused Question Mark: Occasionally, characters might have a question mark pop up next to them when they are puzzled about something.
• Continuity Nod:
  • In Season 2 episode 20, when Big M. summons the bottle genie, Little M. thinks he's the wishing wood, referring to the events of Season 1 episode 35 where the heroes find a piece of wood that grants wishes.
  • In Season 8 episode 24, Little M. reacts to the sound of a school bell by becoming sleepy. Little M. had spent an earlier episode (Season 5 episode 51) attempting to find a solution to his sleeping problem in school.
• Contrasting Sequel Setting: Starting with Season 6, the series frequently zig-zags from some other setting that isn't Planet Xing every season back to Planet Xing itself every other season. The aforementioned season takes place on Planet Guling, which is primitive and prehistoric-themed compared to Planet Xing, a futuristic, robot-inhabited planet; Season 7 brings the action back to Planet Xing; and Season 8 takes place in a book filled with fantasy elements, with magic, dragons, and other stuff you wouldn't expect to find on a planet like Planet Xing.
• Counting Sheep: Careless S. does this in episode 19 in an attempt to get some sleep. Unfortunately, he counts out loud, costing Smart S. his sleep.
• Covered in Kisses: In episode 9, Smart S. gets bombarded by fans when he's initially told he's broken a record. Some of the fans kiss him on the head, leaving visible lip marks.
• Cowboy Episode: Season 9 episodes 32 and 33 involve Careless S. as a cowboy in the Wild West.
• Cranial Eruption: Occasionally, if a character gets hit in the head, they'll develop a bump where they got hit.
• Credits Montage: The end credits sequences have a tendency to play multiple clips of episodes from whatever season the episodes are from.
• Criminal Doppelgänger: Season 2 episode 34 features a wanted criminal who looks an awful lot like Doctor H., to the point that Doctor H. himself is mistaken for him.
• Crop Circles: In Season 4 episode 3, when Agent J. summons a swarm of mosquitoes to cause chaos in the city, one of the things the swarm does is to create shapes in a farmer's field of grain.
• Cross Player: In Season 2 episode 9, the male Big M. is shown playing a video game with a female player character.
• Crossover Punchline: In Season 6 episode 14, a monster, contacting Big M. from far away, mentions being hit by Happy S. so hard that "I have no idea what cartoon I've ended up in!" In the background, Wolf Castle from Pleasant Goat and Big Big Wolf can be seen.
• Cross-Popping Veins: Characters sometimes make facial expressions with cross-popping veins on them.
• Crowd Chant: At the beginning of Season 7 episode 21, Mr. Success stepping on a stage for a TV show is met with a chant of "Succ-ess! Succ-ess!" from the crowd.
• Cruise Episode: In Season 7 episode 32, the second half of a two-part episode, Ambassadors Wang and Miao board a cruise to help them become friends since they must set aside their differences if either wishes to establish diplomatic relations with Planet Xing. Happy S. and the president of Planet Xing tag along and keep watch over the two ambassadors to make sure they get along.
• Crush Blush: Doctor H. often blushes whenever he sees Miss Peach.
• Crying a River: A short montage in Season 8 episode 3 shows Huo Haha going through as many transformations as possible to see if any will benefit in Big M.'s scheme to find one of the elemental wands. One of the forms Huo takes is a baby who cries so much that it floods the room, with Big M. and Little M. in the deluge.
• Crystal Ball: Huo Haha gives one to Big M. and Little M. in Season 8 episode 9 to help them track down the Supermen from miles away. Big M. keeps shaking it too hard, messing up its picture and sound.
• Cucumber Facial: In Season 7 episode 28, one of Little M.'s ideas to give Big M. a letter from their commander that he's been fired is to tape it to a television he watches often during his breaks. It fails because Big M. has cucumber slices over his eyes and thus can't see the television or the letter.
• Cultural Cross-Reference:
  • The show frequently references popular Western superheroes such as Superman, Spider-Man and Batman, as well as Japanese ones such as Ultraman.
  • In Season 8 episode 25, the hairdresser mentions being named Edward Scissorhands.
• Cupid's Arrow: In Season 5 episode 38, Cupid visits a gorilla couple in a cage, the male clearly infatuated with the female. Cupid intends to hit the female gorilla with one of his arrows, but since Big M. is the victim of an invention that causes any and all nearby projectiles to hit him instead, the male gorilla ends up falling in love with and chasing down Big M.
• Cute Is Evil: Terror (when she's not transformed) is probably one of the most prominent examples. She almost failed graduation because Big M. didn't think she was intimidating enough - or at all. Some of the other untransformed monsters also count as this.
• Cuteness Proximity: In one episode, the cuter monsters get away with all sorts of mean and nasty things by their cuteness, pinning their crimes on the one person immune to their cuteness - Careful S.
• Cute Machines: The heroes pilot giant mechs which look very cute. They resemble giant Waddling Heads.
• Cyberspace: In episode 16, Doctor H. and the heroes go inside the former's internet router and traverse a digital world to deliver a birthday card Doctor H. made for Miss Peach.

D-M

• Dancing Theme: The theme song includes a short clip of characters dancing to the song.
• A Day in the Limelight: Miss Peach, who is usually a supporting character at most, gets the main focus in Season 2 episode 39, where she decides to become a Superman.
• Deadly Disc: In Season 2 episode 39, the sewage truck monster attacks by throwing sewer lids like disks.
• Defeat Means Friendship:
  • In season 3, Careful S. fought and defeated Kalo three times (or two and a half, depending on how you consider the last one) and at the end, Kalo wants to stay and fight alongside Careful S. In this case, it somewhat overlaps with Fire-Forged Friends.
  • In season 14, Happy S. becomes friends with the Dark Demon in episode 50 after defeating him in a battle.
• The Dentist Episode: In episode 42 of Season 3, Doctor H. goes to the dentist to deal with a cavity in one of his teeth.
• Descent into Addiction: In Season 7 episode 39, Lele accidentally consumes chocolate, which is a G-Rated Drug to his species of dog alien, and becomes addicted to it to the point that he's willing to purchase it illegally after the candy is prohibited on Planet Xing. Eventually, he is sent to a chocolate rehabilitation center along with Big M. and Little M., who sold him chocolate.
• Descriptiveville: Subverted in episode 13, where the heroes point out that Green Town isn't very green at all.
• Diegetic Soundtrack Usage:
  • In Season 2 episode 44, Big M. presses a button on his voice toner which causes it to play the show's theme song.
  • In episode 8 of Happy Heroes and the Magical Lab, Doctor H.'s car radio plays the original theme song, "Happily Flying Forward".
  • In episode 15 of Happy Heroes and the Magical Lab, a singer holds a concert where she sings the theme song ("Happily Flying Forward" again).
  • City of Mystery's end credits theme is played by Lisa in that season's third episode to lure a sea monster.
• Disappeared Dad: When Doctor H. was a little kid, his father got kidnapped by aliens. It is revealed in season 13 episode 39 that he got brought to Planet Qiyuan for experiments, but he later escaped and got stranded in the Star League, where he joined to gather information about the nuclear powers from the five planets to prevent any planets from ending up like Kalo's home planet did.
• Disease-Prevention Aesop: In 2020, the official YouTube channel started to upload a series of shorts where the Supermen demonstrate what to do to keep healthy amid the COVID-19 Pandemic. The shorts with Chinese audio can be found here and the ones with English audio can be found here (don't worry, all the shorts have bilingual Chinese/English subtitles).
• Disembodied Eyebrows: The King from Season 8 has eyebrows that can be seen in front of his crown.
• Disguised in Drag:
  • In Season 3 episode 6, the Superstar School holds a parent-teacher meeting. Little M., being unable to ask his mother to come, tries to pretend to be his own mother, constantly changing clothes in order to make it look like both he and his mother are there.
  • In Season 9, Big M. does this to fool the heroes more than once. Played for Laughs in his case, since he does this probably more often than strictly necessary (the earliest example is in Season 1 - in episode 18, part of Big M.'s plan to mess with Happy S., who has had his abilities to fly and locate places messed up, is to dress himself up as a woman and pretend Little M. is "her" son, and ask Happy S. for directions to the zoo). He makes a very ugly girl.
• Disney Death: Many, many times, considering it is a kids' show, after all. Careful S. often invokes this as part of his cold humour, sometimes with no explanation whatsoever.
• Disproportionate Retribution: Season 2 episode 22 has Sweet S. whopping the living heck out of Big and Little M. for trying to... steal Doctor H.'s dinner. Big M. even asks if such a cruel punishment is necessary for their actions.
• Distant Reaction Shot: At the end of one episode, Big M. does a Skyward Scream that "I WANNA GO HOME!!!" The camera pans out to a shot of planet Xing Xing as he shouts this.
• Distracted by the Sexy: In episode 2 of Season 2, Careful S. distracts a couple of guards by throwing magazines their way. The magazines' covers depict beautiful women which distract the guards.
• The Ditherer: Careless S. becomes one in Season 7 episode 19, where he's met with a bunch of problems that need resolving at once (Big M. and Little M. have a hostage with them, a pregnant woman is about to give birth, a man is torn by his girlfriend dumping him, Miss Peach comes in on a TV news report and wants Careless S. to claim a prize, and a little girl wants him to sing her a birthday song). They all resolve themselves before he can take care of them... except for the birthday girl, whose cake melts before he can sing her a song; she's not happy about it and doesn't forgive Careless S. for it, prompting him to resort to flipping a coin to make decisions.
• Does Not Know His Own Strength: Happy S. doesn't realize just how strong he is sometimes. One episode in particular focused on this - he had to be able to hold some tofu without it crumbling in order for him to be allowed to get a dinosaur egg. He decided to start easy, but found that he couldn't even hold a boulder without it cracking...
• Does This Remind You of Anything?: In season 13 episode 28, after an incident set by the queen of Planet Gray which causes Big M. to lose, the king imposes laws which prohibit his residents from speaking about the indicent and the name of the queen... for many years. In the real world, that's essentially how Chinese censorship and its sensitive subjects works.
• Domesticated Dinosaurs: In Season 6, multiple residents of Planet Guling are shown to own dinosaurs as pets.
• Domino Mask: Big M. wears one as part of his outfit.
• Don't Try This at Home: In Season 8 episode 6, Smart S. warns viewers not to hit people on the head since it hurts a lot.
  The King: Ever since then [his magic training], I was knocked by the grandmaster with that wand for so many times that my head has been adapted to the real wand! With just one knock, I will know what that wand is!
  Smart S.: Wait a minute, your majesty! I have something to say! (the frame zooms in on Smart S., who directly addresses the audience) It's painful being knocked on the head. Audience in front of the TV, I warn you, never do this anywhere!
• Don't Wake the Sleeper: In Season 3 episode 19, as part of a bad guy test, Big M. and Little M. are sneaking around in Smart S.'s bedroom and trying not to wake him up. The whole time, they're successful in not disturbing his beauty sleep - even when Little M. accidentally sets off a disco ball on the ceiling accompanied by loud music and toys running rampant on the floor.
• The Door Slams You: There's at least one episode where Headmaster Tele is accidentally slammed by a door that was opened by one of the heroes.
• Double Take: In the very first episode, Doctor H. thinks he's finally gotten away from the junkyard's guard dog, but the dog reappears right in his car seconds later. Doctor H. looks to his right where the dog is sitting, doesn't react and keeps on driving like normal, and then realizes what he just saw and panics.
• Downer Beginning: Season 2 episode 30 begins with the Superstar School being destroyed by a storm, thus throwing thousands of children out of their education and, naturally, leaving Headmaster Tele devastated.
• Dramatic Irony: In Season 5 episode 37, Sweet S. wants to see Doctor H. again and sees who she thinks might be him, but loses where he is. She eventually comes across him during a monster battle, and he ends up being hit by one of the monster's attacks that was meant to hit Sweet S.; she completely does not recognize him due to him being infected by the Planet Gray virus, though, and later mistakes Big M. dressed as Doctor H. for the real thing.
• Dramatic Spotlight: In Season 2 episode 24, Big M. starts to cry under a spotlight that he's done for when he finds out his book of ultimate weapons has disappeared.
• Dramatic Wind: Parodied. In Season 3 episode 1, Bao Shuai enters the room and his cape is blowing. Then a banana peel and a piece of paper blow on him, and the frame zooms out to reveal his assistant is blowing the wind onto him with a fan.
• Dream Intro: The beginning of Season 8 episode 7 is supposed to be a nightmare that Careful S. is having about his buddy Kalo's death, given his Catapult Nightmare reaction afterwards.
  • In few of the early episodes of season 14, Smart S. is also done the same thing after having nightmares about Happy S. being defeated at the hands of The Dark Demon back in the end of season 13 in the beginning of those episodes.
• Dream Reality Check: In episode 49, Doctor H., is excited over Miss Peach saying she's actually willing to date him, and asks Happy S. to punch him to see if he's dreaming it all up. Happy S. whops him with his Happy S. Punch.
  Doctor H.: You know, a nice, light punch would have sufficed.
• Dream Within a Dream: In Season 5 episode 21, Big M. is told by the commander to hand in his plan to invade Planet Xing by tomorrow and finds that he hasn't written anything down for the plan yet. He then wakes up to find that it was just a dream and that he managed to write one up... only to then wake up from that dream and find that he really hasn't written anything yet.
• Dressing as the Enemy: Big M. dresses as Smart S. in Season 3 episode 22 to make it look like Smart S. attacked some people when he actually didn't.
• Drill Tank: Smart S.'s Car Knight in vehicle form is a drill tank.
• Drool Deluge: In Season 3 episode 5, Big M. and Little M. produce waterfalls of drool from their mouths as they stare at a dinner Headmaster Tele is having with his princess guest.
• Duality Motif: Appearance-wise, Nine is primarily colored gray on her left side and black on her right, the gray side representing her brother Long.
• Dying Dream: Kafei at the near end of season 14. In the final confrontation against the Dark Demon, before dying, she has a dream where she is reunited with her former boyfriend.
• Dying Moment of Awesome: Complete with giant explosion obliterating the entire opposing army.
• Ear Fins:
  • Fish Monster has a fin on each side of his head where ears would normally be.
  • The sea monster in episode 24 has fins on the sides of its head.
• Early-Bird Cameo: The intro used throughout Season 1 contains a brief clip showing Careful S., who does not make his proper debut in the show until the final episode of said season.
• Early Installment Character-Design Difference: In the first two episodes, Big M. had spiky shoulder pads on his suit and the Planet Gray insignias on his headband and belt, as well as the one on Little M.'s belt, lacked their antennae.
• Early-Installment Weirdness:
  • In the first two episodes of the Lookus English dub, Miss Peach, in her first appearance in the entire series, refers to herself by the alternate name of "Peach I." instead of "Miss Peach". The second episode of the dub also has Happy S. call his attack the "Happy Knight Punch" whereas the name "Happy S. Punch" is used in later episodes.
  • A number of the show's most common running gags and recurring pieces of lore - such as Doctor H. having a Disappeared Dad, Big M.'s backstory where he gets squished by elevator walls, and Big M.'s resulting ugly face making everyone vomit when they look at it - weren't established until Season 3.
  • In the early episodes, Planet Gray's surface is mostly barren and it takes on the starry sky of space. Starting in Season 4, the surface of the planet becomes far more interesting, gaining lots of purple-ish rocky terrain and mushroom-shaped houses.
  • The Car Knights were animated in 2D until Season 4, when they became CGI.
• Easily Thwarted Alien Invasion: Big M. and Little M.'s various plans to take over Planet Xing almost always wind up falling flat on their faces, usually because of the Supermen defeating whatever Monster of the Week they summoned.
• Easy Amnesia: At least two episodes have characters develop amnesia immediately after a collision with some object.
• Eating Contest: Season 11 episode 2 opens with Happy S. and Moondance having a friendly noodle-eating contest. Happy S. becomes too stuffed to eat anymore, but Moondance seems to have enough of an appetite to continue eating even after that point.
• Eating Machine: The heroes are all Ridiculously Human Robots that regularly consume normal food. They do drink oil sometimes, though.
• Edutainment Show: Averted for the most part. However, the mini-season Happy Heroes and the Magical Lab has a segment in each episode called "Explain This!" that gives information on a piece of technology that's relevant to the episode's plot.
• Eggshell Clothing: A number of Planet Guling residents, including the mayor, wear eggshells as hats or pants.
• Either/Or Title: The official DVD and VCD covers for Season 1 and Season 2^note the ones that don't use the Season 2 logo, which uses its subtitle "Happy Heroes and the Happy Superhero"give the show's title as "开心宝贝 又名开心超人" ("Happy Heroes a.k.a. Happy Superman").
• Elemental Powers:
  • Smart S.: Electricity and magnetism.
  • Oversensitive S.: Fire.
  • Sad S.: Water.
  • Sick S.: Wind.
• Elongating Arm Gag: In episode 47, a robot woman extends her arm to grab her kid's toy spaceship.
• Embarrassing Slide: In Happy Heroes and the Magical Lab episode 15, Huo Haha magics the city's technology into being unable to play sound, and Miss Peach's news show uses signs to explain the situation to its viewers. The person holding the signs switches to a picture of Mr. Lightbulb giving a V-Sign by accident, which freaks out an already nervous Miss Peach, and they quickly switch to the next sign.
• Empathic Environment: Subverted. In Season 7 episode 51, Smart S. notices dark clouds gathering in the sky and thinks even the heavens are reacting to the Supermen leaving Planet Xing. A second later, the clouds are revealed to be smoke coming from yet another one of Sweet S.'s poorly-cooked foods.
• The End: Episodes usually end with the Chinese symbol "完" ("finished") being displayed on-screen. The "完" card in this series is stylized with a heart placed on top of the symbol, which is changed to a gear in later seasons.
• End-of-Episode Silliness: It's very common for episodes to end with one last joke from at least one of the characters (with comedic antagonists Big M. and Little M. being common choices) after the action climax, to the point that naming all of the specific jokes would take a while. There are exceptions as well, usually episodes that have a more serious premise or climax (Season 3 episode 2, Season 7 episode 50, and Season 8 episode 7 are a few examples).
• The End... Or Is It?:
  • At the end of season 4 episode 52, Big M. and Little M. find a tablet with a name list of those who were infected with the virus of Planet Gray. Doctor H. is one of the names on the list. Enter Doctor B., the mind-controlled Doctor H., in the next season.
  • At the end of season 5 episode 52, Big M. and Little M. get the mystic stone (which is a competion reward for 3rd place, which the turtle won) and see the residents of Planet Tuling as holograms.
  • At the end of season 7 episode 52, a smoke emerges on Planet Xing, and a voice can be heard saying Huo Haha's name.
  • At the end of season 10 episode 52, Big M. angrily says that his mission failed again and throws the green liquid outside Doctor H.'s house. It drops on Happy S.' Car Knight and its eyes start glowing red.
  • At the end of season 11 episode 52, a Galactic Prison officer asks Moondance and Shadowstar who sent them for the nuclear power, and then the lights go out, and a possessed Kalo smiles in the corner.
  • At the end of season 13 episode 52, at Star League, Xingyue has an emergency meeting that's about the Dark Demon reawakening. Further events can be seen in season 14 episode 6, where the Dark Demon defeats Justice Happy S. and calls Kafei to "create" a fake Happy S.' Jixie Stone and breaks it for the real Jixie Stone to be taken along with him.
  • At the end of season 14 episode 52, Happy S. has a vision of a diamond with a sword symbol.
• Endless Daytime: In Season 8 episode 33, Huo Haha casts a spell on the sun that prevents it from setting, causing Peace Day to never end and thus keeping the Supermen from using any violent attacks on anyone, including Big M. and his group.
• Energy Beings: All Adelians, supposedly, though they usually have solid forms.
• Ensemble Cast: Each of the five Supermen have multiple episodes that give them the main character focus.
• Episode Tagline: Season 6 episode 43 is based around the Planet Guling town's mayor gauging how many times his citizens say the phrase "Darn it, we failed again!", which is typically Big M.'s Defeat Catchphrase.
• Episode Title Card: All episodes have a title card depicting the characters doing various things, similar to the title cards from early on in Pleasant Goat and Big Big Wolf.
• Equippable Ally: Careful S. often uses Kalo as a Morph Weapon.
• Establishing Character Moment:
  • In the first episode, the very first thing Doctor H. is seen doing is to go through a junkyard to find pieces of broken technology to repair, establishing that he is a mechanic. A later scene in the same episode also establishes his crush on Miss Peach by having him develop a Crush Blush while watching a TV show featuring her.
  • Lele's pranks are established in Season 7 episode 1 (two episodes before he makes his first physical appearance!), with the ambassador of the dog planet having some facial hair doodled onto her and being mistaken for a male because of it.
• Even the Rats Won't Touch It: In episode 17, a rat dies after eating food prepared by Sweet S.
• Everyone Calls Him "Barkeep": The King from Season 8 is only ever referred to as simply "the King" and is never given an actual name.
• Evil All Along: In Season 7 episode 29, Jenny, who has offered to act as a mother for the Supermen, is only trying to gain their trust and is actually working for Big M., though she does realize how attached the Supermen have become to her later on and does a Face–Heel Turn.
• Evil Is Hammy: The Lookus dub gives Big M. a hammy, exaggerated voice.
• Evil Knockoff: The duplicating machine monster in episode 27 creates an evil clone of Happy S. The two versions of the character can be told apart by their appearance - the evil Happy S. has a slightly darker color scheme - but the difference isn't enough to immediately convince the others that it's not the real Happy S.
• Evil Laugh: A lot of the various antagonists have some kind of evil laugh they use often.
• Evil Overlooker: An official poster for Season 8 features a red-eyed Huo Haha in the background, right behind the Supermen and Big M. (who, incidentally, is a villain himself).
• Exact Words: In episode 44, Doctor H. tries to win a fitness competition because the reward for winning is going out for dinner with the local television station celebrity - yet another chance for him to impress Miss Peach. At the end of the episode, he does indeed get to go out for dinner... with Mr. Lightbulb, who points out that he never did explicitly say that the "local television station celebrity" he mentioned was Miss Peach.
• Exit, Pursued by a Bear: At the end of episode 10, the bear which was going after Big M.'s bread comes back, this time going after some fish he has stolen from the heroes.
• Exploding Calendar:
  • A calendar with rapidly-ripping leaf pages appears a few times in Season 6 episode 41 as the monsters help take care of Big M. as he is pregnant for several days.
  • In Season 7 episode 46, the montage of the Supermen training for the musical contest features scenes of a paper calendar's pages ripping off as the days pass by.
• Exposed Animal Bellybutton: Penguin Monster has one.
• Expressive Accessory: Big M. has the insignia of planet Gray on his belt and headband. The insignias on both have faces that often change to fit whatever expression Big M. is making.
• Expressive Mask: One of the standard designs of the citizens of Planet Guling in Season 6 is that of one wearing a stone mask whose eyes will move to match the expression they would be making otherwise, but not the mouths.
• Eye Pop: In Season 2 episode 41, Big M.'s eyes pop when he realizes Happy S. walked past his trap.
• Eyelid Pull Taunt:
  • In Season 6 episode 21, after he captures the Supermen in a snare, Big M. gives them this face and then farts on them as a taunt.
  • Smart S. gives this taunt to Huo Haha in Season 8 episode 33 after he fails yet again to keep the wands for himself.
• Face Doodling:
  • In Season 6 episode 35, Buding and her pet dinosaur Qiuqiu pull a prank on Careless S. that involves dooling him a dorky face, using a dinosaur with hair as a paintbrush to do so. Buding then brings out a mirror, which Careless S. sees when he first wakes up from his nap, and he mistakes his reflection for a monster. When he grabs a missile launcher to use against it, Qiuqiu pops out of it instead of any actual projectiles.
  • In the first episode of Season 7, when Ambassador Wang first appears, she sports a mustache and is mistaken for a male as a result. She's quick to point out the mistake and wipes off the mustache, which her son Lele doodled on her as a prank.
• Face, Nod, Action: In Season 6 episode 3, Big M. and Little M. exchange a quick look and nod before the latter jumps into a portal leading into a spaceship.
• The Faceless: Big and Little M.'s commander is only ever seen from the back, or otherwise has his face completely obscured from view whenever he is on-screen.
• Faceship: The spaceship Big M. and Little M. are using right before they're sent falling to Planet Xing is designed to look like an imposing-looking helmet, with the front windows resembling eyes.
• Failed a Spot Check: In Season 2 episode 37, Smart S. chases after the shapeshifting monster, who has shapeshifted into a street light. Careless S. doesn't get why Smart S. is chasing a street light, despite the fact that a moving street light isn't usual at all.
• Fairy Tale Episode: A whole Story Arc of them, in fact. The arc "The Fairy Tale Adventure", spanning episodes 27 to 32 of Season 4, is centered on the Supermen going to the fairy tale world to restore the fairy tales that were fractured by Big M. and Little M. to aid in one of their evil schemes.
• Faking Amnesia: Big M. fakes amnesia in Season 2 episode 50 as part of his evil plan. Joke's on him, though, as he later sustains a collision and actually does get amnesia.
• False Camera Effects: A mock Lens Flare often appears during shots that happen to face the sun.
• False Teeth Tomfoolery: In Season 5 episode 9, some mind-controlled elderly ladies spit their dentures at Happy S., and they go after him in an attempt to bite him. One of them does make it onto one of his decorative head wings, but it gets knocked off by a mind-controlled dog throwing a bone at him.
• Fantastic Fireworks: The intro for Season 8 at one point depicts fireworks going off, one of which is shaped like Happy S.'s head.
• Fantastic Flora: The fantasy world of Xiao Haha's History of Magic book in Season 8 has a forest filled with giant flowers instead of trees.
• Farts on Fire: In the title card for Season 8 episode 5, Huo Haha is showing Little M. how to start a campfire with magic. Little M. farts on his little flame, causing it to singe Huo.
• Feud Episode: Episode 10 of Season 7 is a variation on the trope. Nearly everyone in the city is fighting with each other for no apparent reason... because Big M. has set up a machine that causes rival ambassadors Wang and Miao to have their negative feelings projected onto others whenever they're quarreling, so the problem lies in the Supermen getting them to stop arguing so that everyone else will stop too.
• Fictional Holiday: In Season 8 episode 33, the medieval kingdom celebrates a holiday called Peace Day. To commemorate the end of a war that had occurred long ago, for 24 hours, everyone in the kingdom is forbidden from settling conflicts violently and must find a way to do it peacefully; otherwise, they will be sent to jail.
• File Mixup: In Season 7 episode 28, Little M. is trying to get a note to Big M. indirectly that says he's fired, but later realizes that the note may have gotten mixed with Happy S.'s test paper (which he went to bury to hide his poor test score) when they bumped into each other earlier. What he thinks is the note for Big M. is actually a test paper Doctor H. buried in the ground when he was little.
• Fire-Breathing Diner: In Season 2 episode 4, Big M. eats a chili lollipop and blows a flame out of his mouth from it.
• Fire-Forged Friends: Careful S. and Kalo, who saved each other's lives to get out of that lava cave trap.
• Fireball Eyeballs: In Season 5 episode 22, Headmaster Tele's eyes become flames when he gets angry at Careless S. for accidentally destroying the Superstar School building with his weapon.
• First Law of Resurrection: One character inexplicably returns in one season after having been killed in a past season.
• Fish People: One of the many monsters featured in the show is a blue fish humanoid who attracts the hunger of the cats from Cat Planet.
• Five-Episode Pilot: The first two episodes form a two-parter called "It's the Birth of Happy S." which shows how the Supermen formed and establishes the show's Monster of the Week formula.
• Flaming Meteor: In episode 6, as Smart S. and Careless S. watch a meteor shower, one of the meteors falls squarely on them with a trail of flames behind it.
• Flashback: Employed fairly often, with Season 8 containing a few specifically to earlier episodes prominently featuring Kalo since Careful S. is remembering him since the Heroic Sacrifice he performed in Season 7. Interestingly, the episodes with the new art style that flashback to pre-art shift episodes keep the footage in the old art style, with Season 12 episode 35 and its flashbacks to pre-art shift episodes featuring Zelia (as well as the theatrical film Happy Heroes 2: The Battle of Planet Qiyuan, which was also from before the new visual style was first used) being one example.
• Flashback Effects: The show rarely does much to transition between flashbacks and scenes taking place in the present time, but in Season 5 episode 37, Sweet S.'s memory of her searching for Doctor H. earlier is introduced and concluded with a wavy screen effect.
• Flight: Happy S., Kalo, Zelia, and Dragon all have the ability to fly.
• Floating Clocks: In the Season 9 intro, the heroes travel through a time vortex filled with floating clocks.
• Floating Island: The ancient Chinese-looking movie world the Supermen enter in Season 3 episode 13 is a bunch of floating islands connected by bridges.
• Flower-Pot Drop:
  • In Season 2 episode 50, Big M., upon being informed by Little M. that someone told Happy S. their flying shark's weakness, yells that whoever gave Happy S. its weakness should be hit by a flower pot and attacked by angry dogs from the street. Since an amnesiac Big M. was the one who gave Happy S. the shark's weakness, he winds up being the one who gets hit by a falling flower pot, followed by him being attacked by some angry dogs.
  • In Season 8 episode 17, this is one of the misfortunes Sweet S. predicts and saves a villager from.
• "Flowers for Algernon" Syndrome: Season 2 episode 38 sees Careless S. get two more CPUs installed in him to curb his forgetfulness. The new CPUs work a little too well, causing Careless S. to become one step ahead of everything to the point of annoying the other heroes. Doctor H. solves this by going into Careless S.'s mind to get rid of the CPUs.
• Flowers of Romance: In Season 2 episode 39, Doctor H. imagines he is giving flowers to Miss Peach, both for her efforts as a superhero and because he's in love with her.
• Flying Broomstick: Several of the dark wizards in Season 8 fly on broomsticks.
• Flying Seafood Special: The shark in Season 2 episode 50 floats around in the air.
• Follow Your Nose: In Season 3 episode 49, Sweet S. makes food using some mushrooms sprinkled with special powder Big M. accidentally got on them, and they produce a pleasant aroma that attracts a bunch of robots, who float in the air as they sniff it. Several vehicles being driven float at the scent as well.
• Food as Bribe: In City of Mystery episode 6, Lisa is taken hostage by Rock Warrior but acts surprisingly upbeat about it, acting as though Rock Warrior is her friend and giving him apples as a bribe. Rock Warrior doesn't fall for the trick and keeps carrying Lisa with him.
• Force Feeding: In Season 7 episode 2, the Global Leader states that he's too hungry to decide which of the two planets he should make diplomatic with, Dog Planet or Cat Planet. The ambassadors of both planets force-feed him their planets' food of choice, resulting in him throwing up.
• Forced Transformation: In Season 8 episode 22, Happy S. is on the receiving end of a curse from Huo Haha that turns him into a cracker. Not only does this strip him of his superpowers, but it makes him susceptible to melting when in the rain or near a fire, on top of him being edible.
• Foreshadowing: In the final episode of Season 8, a television comes out of nowhere to save Sweet S. Said television has the color scheme of Kalo, who had died in Season 7 - implying that Kalo isn't truly dead after all. Season 10 confirms this.
• Forgetful Jones: Careless S. tends to forget stuff, even at the cost of easily winning a battle - it's not uncommon for him to forget the ammo to a weapon, or load the wrong kind of ammo into it.
• Foul Flower: The monster of the week in Season 6 episode 11 is a giant, one-eyed flower creature that uses its leaves and root-like appendages as whips.
• Four-Fingered Hands: All of the characters have four-fingered hands.
• Fourth-Wall Portrait: In Season 8 episode 12, Big M. draws something with the magic pen but it doesn't come to life as expected. Little M. explains that his drawing doesn't fit the art style of the cartoon, and then the episode cuts to a shot of Big M.'s artwork of a live-action person.
• Fourth Wall Psych: In Season 7 episode 20, Professor Limon gives a quick Don't Try This at Home message about hitting people in their pressure points while facing the audience. But then it cuts to the next shot, revealing he was just looking at and speaking to a camera.
• Fractured Fairy Tale: The whole point of the six-episode "The Fairy Tale Adventure" story arc from Season 4 is that Big M. and Little M. go into the fairy tale world to ruin the stories, and the Supermen must stop them. The children of Planet Xing are not amused by the ruined versions of the stories, needless to say.
  Preschool teacher: [reading from a book to a bunch of children] "Once upon a time, there was an ugly duckling. Later, it turned into a roast duck."
  [the children start crying]
  Preschool teacher: Why didn't it become a swan? [grabs another book next to her] We'll change books. [starts reading again, with the children's crying stopping as she does so] "Once upon a time, there was a beautiful duckling. Later, it turned into a bleached roast duck."
  [the children start crying again]
• Frameup: In Season 3 episode 22, Big M. dresses up as Smart S. and goes to annoy some people, the idea being to make the real Smart S. look terrible. It works, and Smart S.'s loyal fans become distraught over their idol doing the nonexistent crimes.
• "Freaky Friday" Flip: In Season 4 episode 18, Happy S. and Lady Monster swap bodies after the latter's body-swapping gadget is accidentally triggered during a battle. Naturally, Happy S. in the monster's body is mistaken for the villain by the other Supermen.
• Freeze Ray: In Season 8 episode 23, this is one of the things Careless S. has invented. It becomes useful when Happy S. indirectly causes a tornado and a wildfire after defeating a dragon summoned by Huo Haha, threatening the plant people.
• French Maid Outfit: Big M. wears a French maid outfit throughout episode 48 as he is babysitting the heroes.
• Freudian Excuse: In Season 7 episode 13, the reason Clown Monster became a villain is he was born with face paralysis and is incapable of smiling. Because of this, he was treated so unfairly as a child that he donned his Clown Monster alias and vowed to make everyone smile forever - by freezing them into stone.
• Fruit of the Loon: In Season 5 Episode 22, Headmaster Tele swears that if he sees a weapon of any kind inside the campus, he will confiscate it. The frame zooms out to reveal Kalo, who is seen transforming his hand into a blade to cut a watermelon that he got from who-knows-where. Headmaster Tele, true to his word, then literally confiscates Kalo (along with his watermelon).
• Frying Pan of Doom: In Season 3 episode 12, Arcas's mother hits him with a frying pan twice - once after seeing the trouble he's caused, and again when he forgets to refill their ship's fuel.
• Full-Body Disguise: In Season 7 episode 45, Jeiro's full-body costumes of Lele and Big M. look exactly like the respective characters.
• Funnel-Mouthed Cephalopod: In episode 13, Sweet S. saves a group of octopuses, all of which have funnel mouths, from a polluted lake with her Sweet Protection Bubbles.
• Funny Animal: The inhabitants of planets Miao and Woof, both introduced in Season 7, are anthropomorphic cats and dogs respectively, but still show animal-like traits from both (the Woofians sit like dogs and like to eat bones while the Miaolings like to eat fish, for example).
• Funny Background Event: In episode 49, there is a scene where if you look in the background, the silhouettes of a certain boy and alien flying on a bicycle can be seen passing in front of the moon.
• G-Rated Drug: In Season 7 episode 39, Lele accidentally consumes chocolate and, being from Dog Planet, becomes delirious from it and develops such an addiction to it that at one point he secretly purchases a suitcase of the stuff from Big M. and Little M., who are disguised as cats.
• Gale-Force Sound: In Season 7 episode 20, Ambassador Wang screams at Big M. and Little M. loud enough to blow them near a tree.
• Game Show Appearance: In episode 19, Smart S. trains to compete in a quiz show to win enough money to let Doctor H. build a new transportation track in Planet Xing's city. Big M. also wants to win the game show's cash prize. When they are finally ready to play the game, Little M. hijacks the spotlight to pick Big M., but it chooses Careless S. instead.
• Genie in a Bottle: Referenced in Season 2 episode 20 with a genie who is literally a bottle.
• Gassy Scare: In Season 6 episode 41, Big M. develops a bump in his tummy and is convinced that he is pregnant with a baby. By the end, it seems like he is about to give birth... only to realize it was just gas.
• Genius Serum: In Season 6 episode 34, being bitten by a Guling lizard causes Big M. to revert to his once-smart self from before he was hit by elevator doors and became his eviler, uglier self, and thus gives him more competence to actually capture the Supermen. Later on, Big M. starts to turn into a lizard himself from the lizard on his head.
• Giant Woman: Well, more like "Giant Girl" than anything, but you get the idea. In episode 50, Big M. manages to control Sweet S. with his Black Jewel, causing her to grow in size and wreak havoc upon the city.
• Gigantic Moon: In Season 5 episode 23, Happy S. and Shao Long have a battle in the night, and a large moon illuminates to make Shao Long more visible in the sky.
• G.I.R.L.:
  • In episode 6, Doctor H. wants to go to Peach Garden to meet Miss Peach after learning from an e-mail that she's there, only to discover it's actually a male robot who goes by the e-mail handle "Peach" and dresses like her, as well as sells actual peaches there.
  • In Season 2 episode 9, Big M. plays an MMORPG with a female character and has no problem flirting with someone with a male player character, not realizing the player is Happy S.
• Girls with Moustaches: In Season 5 episode 4, the facial hair-growing formula Big M. slips into the hair lotion has as much of an effect on women as it does on men, with Miss Peach being among the affected female victims.
• Glass-Shattering Sound:
  • In Season 3 episode 26, the sound of the Supermen using a special team attack on the monsters is enough to crack the lens on Big M.'s binoculars slightly.
  • In Season 7 episode 46, Ambassador Miao is surprised that he is disqualified from the talent show since his singing voice only cracked three glasses. One of the judges, Headmaster Tele, explains that he and the other judges all have glasses on their faces that cracked from the noise.
• Glass Smack and Slide: In Season 8 episode 24, Big M. smacks Huo Haha right into the screen when he shushes him and Little M. and encourages them to make their Evil Laugh quieter (he thinks their laughing will scare the viewers). Huo slides down after hitting the screen.
• Glowing Flora: Of the "glowing fungi" variety. In Season 8 episode 35, Sweet S. finds glowing mushrooms and has Big M. eat some, causing his belly to glow. They were actually normal mushrooms until one of Huo Haha's powders spilled out of its bag, causing them to glow.
• Go Out with a Smile: In Season 7 episode 50, a certain character is clearly smiling as he says his goodbye and defeats the opposing forces.
• Good Angel, Bad Angel: In Season 3 episode 18, Smart S. tries to withdraw money from an ATM machine to buy a super-alloy screw. A shoulder angel and devil resembling him appear, with the devil trying to persuade him to withdraw the money and the angel trying to persuade him not to since he can only withdraw money several times and this is his only remaining chance to do so. This being the very vain Smart S., the devil reminding him that he won't be able to buy his special shampoo without the money and enamoring the angel with the thought of this shampoo is enough to make him withdraw the money anyway.
• Goofy Print Underwear: Big M. is shown on a few occasions to be wearing underwear with a heart pattern on it.
• Grammar Correction Gag: In Season 2 episode 32, Happy S., Sweet S., and Smart S. find the mysterious note that Careless S. found earlier, which says that the heroes have turned against him. Smart S. quips that the note should look suspicious just from reading it because... it has two spelling mistakes.
• Gratuitous Spanish: In Season 7 episode 47, the ambassador of Suspicious Planet is recovering in the hospital and gets comments on a tablet. One of the comments clearly displays "hola" in Latin script.
• Gravity Is a Harsh Mistress: In Season 2 episode 21, Big M. jumps through an open window to escape from the Supermen's dorm. Big M. doesn't realize he's too high up in the building to land safely until Little M. points this out, at which point the slow-motion jump is interrupted by him falling to the ground abruptly.
• Gray Rain of Depression: In Season 8 episode 7, it starts to rain when Happy S. finds Careful S. standing outside, still depressed about Kalo and his death.
• Green and Mean: Big M., the main villain, wears a green suit of armor.
• Green Gators: As you'd expect, the alligators that Smart S. encounters in the circus in Season 3 episode 33 are different shades of green.
• Group Picture Ending: Season 3 episode 29 ends with Doctor H. taking a group picture of Careful S.'s duplicates.
• Grow Old with Me: In Season 2 episode 20, Doctor H. makes Three Wishes on a genie to be married to Miss Peach, using the other two wishes to fix the side-effects that the genie throws at him for making the initial wish with minimal effort. To bypass having an uncurable disease, Doctor H. wishes that he and Miss Peach were a hundred years old... which backfires when he realizes he thinks the younger Miss Peach is much cuter and is enough for him to beg for everything to go back to normal.
• Growling Gut: In Season 6 episode 41, Big M. is being taken care of by the other monsters when he is assumed to be pregnant, and the monsters are on the watch for when he's ready to give birth. One of the false alarms is him having a growling stomach from hunger and this being mistaken for him about to give birth, which is then followed by everyone thinking he's giving birth again when it's just Fish Monster's stomach growling from hunger this time.
• Hair-Trigger Avalanche: In Season 3 episode 12, Big M. hits Little M. while they are on a snowy mountain. The impact is somehow enough to make the explosive barrels they've set up blow up, causing an avalanche.
• Hairstyle Inertia: In Season 2 episode 20, the only difference in elderly Doctor H.'s and Miss Peach's hairstyles is that they are gray from old age. The shapes of the hairstyles remain the same.
• Hammerspace:
  • In one episode of Season 7, Little M. praises Big M. for pulling out a weapon from thin air, adding that it's just like something you'd see in a cartoon. Except that weapon was actually one of several that was stuck on Big M.'s back from an incident that had happened just before he pulled one out.
  • In City of Mystery episode 3, Kalo is shocked when Lisa pulls a guitar out of thin air so she can play a song to lure a sea monster to her.
• Handy Remote Control: In Season 2 episode 3, the teacher of the Superstar School uses a one-button remote to control the desks, the blackboard, etc.
• Harmless Electrocution: Any time a character is electrocuted, it's not particularly harmful.
• Harmless Freezing: In Season 10 episode 8, Penguin Monster freezes Headmaster Tele. The heroes spend the rest of the episode trying to thaw the ice trapping him; when they finally do free him, Headmaster Tele turns out perfectly fine.
• Harmless Villain: Big and Little M., for the most part. Their schemes to take over planet Xing Xing never actually succeed, much to their disappointment.
• Hates Baths: One episode of Season 8 features a community of gnomes who dislike bathing due to them being obsessed with staying filthy.
• Heads or Tails?: In Season 7 episode 19, Careless S. has a decision-making crisis that extends to him not being able to decide whether to step with his left foot or his right foot first to walk across a street. Ambassador Wang notices and suggests he flips a coin to figure it out, prompting Careless S. to pull out a coin and decide based on which side it lands on when he flips it which foot to use; he goes further and spends the episode making all his decisions using that coin until Headmaster Tele persuades him to stop.
• Heart Beats out of Chest: One episode of Season 7 has Big M. being so shocked that he has a heart attack, and his heart becomes visible as it beats out of his chest.
• Heart Is an Awesome Power: Sweet S.'s superpower is bubbles. Which can serve as shields, flying wrecking balls, containment devices, air helmets, transporters, a method of flying...
• Heel–Face Turn: Punk Monster does one in Season 7 episode 26, deciding to leave Big M. and his monsters and promising to help people. Big M. is not amused, calling out Punk Monster for doing some nice things like cleaning up some garbage on the table and closing the door behind him before he leaves.
• Here We Go Again!:
  • Season 2 episode 34, about Doctor H. being mistaken for a criminal who looks like him, ends with a news report about another criminal resembling him escaping from prison.
  • Season 5 episode 18 ends exactly the way it begins - Big M. gets stuck down a manhole and wants Careful S. to help him up, since he had helped him back up the first time around.
  • Season 5 episode 22 ends with Careless S. using his missile blaster to send Big M., Little M., and the construction worker monster out of the school... right after he spent an episode having to deal with Headmaster Tele having confiscated his weapons to keep everyone safe. Sure enough, Headmaster Tele tells him he's going to confiscate his weapons again.
• Heroic Fatigue: In the first episode of Season 10, an Evil Plan by Big M. involves the Supermen getting so many calls for help through their Superman hotline that it makes them too tired to fight monsters.
• Heroic Sacrifice: In Season 7 episode 50, Kalo uses what little energy he has left to defeat an army of enemy spaceships, killing himself in the process.
• High-Pressure Emotion: In Season 10 episode 23, after Smart S. feeds a monster the food she prepared, an angry Sweet S. has steam shooting out of her ears right before she chases Smart S. over it.

  Sweet S.: That was the lunch I made!

• His Name Really Is "Barkeep": In episode 29, an alien girl lands on planet Xing Xing and, since she's forgotten what her name is, decides to call herself "Cockroach". At the end of the episode, Doctor H. finds a document from her ship revealing that her name really is Cockroach.
• Hit Flash: Hit flashes depicting stars appear frequently when characters get hit by something.
• Holding Both Sides of the Conversation: In Season 3 episode 6, Little M. disguises himself as his own mother for a parent-student conference at school. He winds up having to make it look like both he and his mother are there at the same time, including making it look like the two are speaking to each other.
• Hollywood Chameleons: The chameleon-like beast in Season 2 episode 43, befitting of the species he resembles, can camouflage himself by changing color.
• Hollywood Heart Attack: Throughout Season 7 episode 28, Big M. has a weakened heart beat and Little M. has to be careful not to startle him too much with the news that he's been fired. A few times, he comes very close to learning he's fired and falls to the ground, heart clutching his chest where his hear is and with a fainter voice.
• Hollywood Prehistory: Planet Guling from Season 6 has several features making it much like a prehistoric setting (it has inhabitants resembling cavemen who live in caves, and there are also lots of dinosaurs living alongside them).
• Hologram: In episode 14, the Supermen visit Mr. Lightbulb's produce greenhouse, but one of them trips over a plug inside, loosening it and causing all the plants to disappear, revealing them to be holograms.
• Horrible Judge of Character: Even though the evidence could be staring them right in the face, the heroes would still probably not believe that Big/Little M. are trying to conquer Planet Xing (although it has been shown that Big and Little M. aren't evil, per say, just doing their job). However, in Season 8 episode 35, Sweet S. does seem to be prepared to accept the fact that Big M. is "evil" without an insane amount of denial. Huo Haha does get Big M. out of the situation, however.
• Hospital Epilogue: Near the end of Season 12 episode 25, Sweet S. wakes up in a hospital after having hurt herself in an incident involving a spaceship.
• Hostage for MacGuffin: In City of Mystery episode 6, Rock Warrior captures Lisa and requests that Careful S. and Kalo give him Star Pieces if they want her freed. Lisa does a poor job of being a hostage, acting like her captor is a friend and even offering him an apple as a bribe.
• Hot Springs Episode: Episode 32 is about the heroes going to a newly-opened hot spring to warm up on a cold winter day after Big and Little M. cut the gas line to Doctor H.'s house.
• Human Aliens: Certain inhabitants of planets Xing Xing, Gray, etc. (such as Doctor H., Miss Peach, and Big and Little M., to give some examples) look and act so much like humans that they could otherwise easily pass for them if not for the show's space setting.
• Human Cannonball: The premise of episode 3 is that Big M. and Little M. steal a cannon from a circus act and try to launch themselves back to their home planet using it.
• Human Popsicle: In Season 8 episode 32, Careless S. discovers what looks like the grandmaster Xiao Haha frozen in a secret room in the King's castle and thinks he froze him years ago, and he, Sweet S., and Smart S. try to unfreeze him. While he's right about the "frozen years ago" part, it's not actually Xiao Haha; when they finally do unfreeze him, they find out it's actually another old teacher of the King's, whom he froze because he was fed up with him giving him so much homework.
• Humanoid Aliens: A lot of the monsters that Big M. hires to go after the Supermen have human-like body structures, but with plenty of features to distinguish them from the actual humans on Planet Xing and Planet Gray. Take, for example, Scary Monster with her pink fur and the aptly-named Fish Monster.
• Hurt Foot Hop: In Season 8 episode 20, the King realizes Huo Haha has cast a spell on him that transfers all the pain he would otherwise feel to Big M. and uses this to his advantage by hurting himself. Big M. holds his his hurt foot while hopping on the other one as a reaction to one of the things the King does to inflict pain on him.
• Hypno Pendulum: In Season 5 episode 51, Big M. swings a rock on a string in order to get Little M. to go to sleep. Little M. tells the general that modern hypnotists usually tell whoever they're hypnotizing to look into their eyes, mimics the movements... and finds that he's sent Big M. to sleep.
• Idiosyncratic Wipes: The show often uses a transition of Doctor H. fixing a device.
• Idiot Crows: In episode 10, a crow flies over the gang when Smart S. asks where to plug in Careless S.'s rice cooker while they're out on a camping trip, with no outlets in sight.
• Ill-Timed Sneeze: Subverted in Season 13 episode 2. Happy S., Smart S., and Careful S. don bee costumes to infiltrate a hive of giant bees, and as they approach the hive, a leaf passes by Happy S., making him sneeze and lose the head to his costume. Bee guards outside the hive notice the costume's head and think it's the cut-off head of an actual bee, too panicked to notice the Supermen who just beat them up and enter their headquarters.
• I Owe You My Life: Kalo to Careful S. (even though they really saved each other's lives). Kalo serves Careful S. as his weapon, and the two are close friends.
• I Taste Delicious: In Season 8 episode 22, the King wonders if Happy S. is actually enjoying being a cracker when he notices him trying to lick his hands and get a taste of his cracker self.
• I Was Quite a Looker: Big M. used to be quite the dashing young fellow, and intelligent too, with an IQ of above 200. We get to see this firsthand in Season 9. Then his head got slammed in-between two elevator doors... repeatedly.
• Idea Bulb: A light bulb appearing near a character's head when they have an idea happens fairly often.
• I'll Never Tell You What I'm Telling You!: In City of Mystery episode 5, a villain introduces himself to Careful S. and Kalo by saying he's totally not the Rock Warrior sent by the Dark Lord. Later in the same episode, he tells them he's definitely not running away in the direction that he's pointing at... only to do just that.
• I'm a Humanitarian: In Season 6 episode 42, Big M. and Little M. are punished by the Planet Gray Commander for failing a mission by being thrown into the company of cannibals who gladly stew them alive, clearly intending to eat them.
• Immediate Self-Contradiction: In Season 7 episode 13, Little M. realizes Clown Monster's ability is to use the energy of people's laughs to turn them into stone and he wants to make him laugh, so he confidently states he won't let himself be persuaded to laugh... and then he immediately laughs afterward, thus getting himself pertrified.
• Impact Silhouette: In Season 5 episode 1, Big M. and Little M. sneak into Doctor H.'s bedroom, where they accidentally set off a bomb and are sent flying through the bedroom wall. The resulting holes in the wall are shaped just like them.
• Impairment Shot: In Season 7 episode 39, Lele becomes addicted to chocolate and has two shots from his point of view, both with a wavy effect showing that the sweets have made his vision warped.
• Impossible Theft: In Season 7 episode 45, Jeiro the cat thief is a master of making impossible thefts. In particular, he threatens to steal Smart S. (but wouldn't that be more like kidnapping?) at midnight, and Doctor H. creates a big ice ball surrounded by security lasers to protect him... and Jeiro manages to run off with Smart S. anyway.
• Impostor-Exposing Test: In episode 27, the gang asks several questions to the two versions of Happy S. to find out which one is the fake one. The fake one wins the test, much to the utter shock of the real Happy S.
• Improbable Hairstyle Sequence: In episode 49, Smart S. cuts Doctor H.'s hair into several impossible hairstyles, including the shapes of a heart with an arrow through it, a pumpkin, and a telephone.
• Improbably High I.Q.: Before he got slammed in the face by elevator doors and became his current self, Big M. had an IQ of over 200.
• Improvised Umbrella: In Season 6 episode 12, the Planet Guling natives are briefly seen holding large leaves to weather out the rain.
• In Medias Res: Season 3 episode 35 begins with Big M. visiting a gravestone he's erected in memory of Little M., shows what happened to the latter character that led to that (he wasn't able to escape a prison fast enough and got locked in, leaving him with a bunch of cops who had been trying to shoot him and Big M.), and then continues the story from where it had began.
• Inconsistent Dub:
  • The English translations aren't consistent between the title Happy Friends, Happy Heroes, Happy Hero, or Happy Superman.
  • As with Pleasant Goat and Big Big Wolf, the English versions of the show have a case of inconsistent dubs plural since the character names are different depending on the dub:
    • The Lookus dub uses the names Happy S., Sweet S., Smart S., Careless S., and Careful S. for the Supermen, Big M. and Little M. for the villains, and Doctor H. and Miss Peach for two of the allies of the Supermen. The dub of Season 10 uses this same set of names.
    • The Miao Mi dub weirdly seems to fluctuate between two sets of alternate names for the characters, with the names being as follows: Happy S. is Happy Superman or just Happy, Sweet S. is Sweetheart Superman or Sweetie, Smart S. is Flowering Heart Superman or Romeo, Careless S. is Careless Superman or Flighty, Careful S. is Careful Superman or Careful, Doctor H. is Doctor Home or Doctor House, and Little M. is called Small Monster (or, in at least one episode, Monster Small) or Little Monster. Big M. being called Big Monster and Miss Peach being called Sister Peach are more consistent compared to most of the others; Kalo does go by that name in the official English descriptions for the episodes, but is instead known as Galo in the actual episodes themselves.
    • Planet Xing, though more of a location than a character, also has inconsistent naming across the dubs. The Lookus dub calls it Planet Xing Xing, the Miao Mi dub calls it Star Planet (or Starry Planet), and the dub of Season 10 uses the name Planet Xing.
    • The Supermen's attacks are also changed in the Miao Mi dub. The "Happy S. Punch" is the "Iron Fist", the "Sweet Protection Bubble" is the "Sweetie Bubble", and the "Smart Magnet" is the "Flowering Heart Magnet" and Smart S.'s magnetic chain attack is called the "Flowering Heart/Romeo Magnet Chain".
• Incredible Shrinking Man: In Season 5 episode 47, Doctor H., who is being mind-controlled by Big M., uses a shrinking spray on the heroes, which also gets on Big M. and Little M. by accident. The three episodes following it form a short Story Arc about the heroes interacting with a bunch of ants in an ant village.
• Inelegant Blubbering: Careful S. blubbers when he reacts to a tragic event in Season 7.
• Infernal Background: Several episodes have flames appear behind Big M. as he angrily yells at Little M. over whatever.
• Inflating Body Gag: In Season 8 episode 26, a guard shoots a needle at Big M., causing his body to inflate and float in the air.
• Injury Bookend: In Season 2 episodes 1 and 2 (a Multi-Part Episode), Careful S. loses his memory after a collision with a spaceship. A similar collision is what restores his memory later.
• Introductory Opening Credits: The intro contains shots of the heroes with their names beside them.
• Insect Queen: The "Mini Superman Adventure" story arc from Season 5 sees the Supermen, Doctor H., Big M., and Little M. shrunken down to the size of ants and becoming involved with an incident with an ant colony, whose queen wears royal garments and a leaf crown and is carried around on a leaf by her servants.
• Insomnia Episode: In Season 5 episode 51, Little M. finds himself falling Asleep in Class often, and Big M. uses numerous methods - Counting Sheep, using a rock pendulum, etc. - to get him to sleep at night, to no avail.
• Instant Bandages: Happens several times to various characters. In particular, it occurs twice in episode 11. First, Big M. gets electrocuted by an electric fence and suddenly has bandages on him when he gets up; these bandages fall off a few seconds later. Then, the criminals Happy S. frees from jail suddenly have bandages on them after Happy S. trips over a rock and drops the police car containing the criminals.
• Instant Fish Kill: In Season 6 episode 7, Little M. uses a smelly sock as bait for his fishing rod. The stench is so bad that it immediately kills a bunch of fish in the water below, and they float to the surface.
• Instant Taste Addiction: In Season 7 episode 39, some chocolate accidentally ends up in Lele's mouth and, chocolate being toxicly addictive to his species, he immediately becomes addicted to the stuff and wants to eat more of it.
• Invisible Holes: In Season 3 episode 40, Little M. gives Big M. a cup of water to drink. The water doesn't stay in Big M.'s body, pouring out through numerous holes he accumulated from being hit by projectiles from guns that were being shot at him and Little M. earlier.
• Invisibility Cloak: Doctor H. invents one in Season 2 episode 15 (which is literally titled "The Invisibility Cloak" and everything). Big M. tries to steal it, only to get Sweet S.'s pajamas instead.
• Involuntary Dance: In Season 10 episode 12, Big M. at one point uses Doctor H.'s machine to make Smart S. do a ballet dance against his will - complete with him spawning a ballerina dress out of nowhere. Seconds later, he does the same thing to Careful S. and his duplicates, also with spontaneously-appearing dresses to fit.
• Iris Out: It's common for episodes to end with an iris out on a character.
• Is It Something You Eat?: In episode 3, Little M. is running away from the Supermen chasing him with electric prongs and says he'll defend himself with the Black Jewel, which he drops on the ground. Careless S. finds it and inquires about it.
  Careless S.: What does this thing do?
  Little M.: Hey, that's mine!
  Careless S.: Wait, you mean this is something you eat?
  Little M.: Yes, yes, that's right. Now give it back.
• Jaw Drop: In Season 3 episode 5, Big M.'s jaw drops when he nearly gets hit by a knife. He promply compresses his mouth closed.
• Jetpack: Careful S., uses a transformed Kalo as a jetpack, and Careless S. sometimes uses an actual jetpack.
• Journey to the Center of the Mind: Careless S.'s mind in one episode, resulting in a Battle in the Center of the Mind between them and two false Careless S.s.
• Judicial Wig: Headmaster Tele wears a judge wig in Season 2 episode 10 when he holds a court trial concerning Big M. and Little M. being spies.
• Just a Machine: Once one of the characters learns they are actually a robot, they immediately lament about being "fake" before running out of the room crying.
• Kid Hero: The heroes are revealed to be in 3rd grade in one episode, placing them at around eight years old (at least mentally; they presumably haven't been revived for that long).
• Kissing the Ground: Big M. does this in the first episode of Season 4 when he realizes he's finally back on his home planet of Planet Gray.
• Knife Outline: In Season 3 episode 5, the princess having food with the Superstar School students throws away a knife after being given one, saying she doesn't use it for dinner. Headmaster Tele and the other students decide they don't have a need for knives either; the barrage of knives pins Big M. and Little M., who are behind them, into uncomfortable poses on the wall.
• Last Episode, New Character: In the last episode of Season 1, Careful S. is officially introduced to the superheroes.
• Later-Installment Weirdness: It took until Season 9, six years into the show's run, for the episodes to list some of the people who worked on them in their title cards.
• Left the Background Music On: In Season 6 episode 27, Big M. is shocked to learn that he's no longer able to move and starts thinking over his life, with some sad violin music playing in the background. The sad music turns out to be from a musician who is in the hospital room with them; Little M. gives him a few coins and he leaves immediately.
• LEGO Body Parts: At the end of episode 3, Big M. and Little M. accidentally land themselves in a circus act where they're placed in boxes that get cut into smaller segments and scrambled between the two. The experience ultimately leaves their heads swapped.
• Lethal Chef: Sweet S. It's been said that her cooking is essentially a biological weapon.
• Level Ate: In Season 10 episode 23, the first level of the video game the Supermen have to Win to Exit is a candy world with big candy suckers and other sweet treats.
• Lifelines: In episode 19, Careless S. does surprisingly well at a quiz show until he reaches the final question, "What kind of bug will make a computer fail?", and is presented with the option to call a friend for the answer. Careless S. decides to do it, and Little M. receives the call on the phone, with Big M. angrily giving the answer of "virus bug", thinking Little M. is asking that question again.
• Lightning Glare: One occurs at one point in Season 7 episode 3, with some lightning spawning between Lele and Keke as they stare angrily at each other over having to sit with each other at the same desk in school.
• Limited Wardrobe: In episode 49, Doctor H. goes to his closet to find some clothes to wear for his date with Miss Peach. All of the outfits in his closet are the exact same as the yellow-and-purple one he usually wears.
• Lions and Tigers and Humans... Oh, My!: Anthropomorphic cows live among the Human Aliens on Planet Xing Xing.
• Literal Metaphor:
  • In Season 3 episode 22, Big M. metaphorically states his intention to "lead the snake out of the hole", an escaped Smart S. being the "snake" in question. Little M. takes his command literally, playing a flute and causing a snake to coil up on Big M., who then has to tell Little M. that he meant Smart S. and to get the snake off of him.
  • In Season 8 episode 2, the King explains that the old grandmaster Xiao Haha swept the nation with his token... which is a broom. He literally swept the nation to clean it up.
• Literal Split Personality: Four of Careful S.'s Self-Duplication clones have very distinct personalities, and according to Doctor H. they're all a part of his personality. Evidently, he's extremely good at hiding it.
• Literal Surveillance Bug: Big M. has a little robotic fly that he and Little M. occasionally use to spy on the Supermen.
• Live-Action Adaptation: It received one in 2023 called No Way! I've Become a Superman (不是吧! 我变成超人了).
• Living Shadow: In Season 4 episode 45, Big M. uses a device that turns people's shadows into living beings that then hurt the people who cast the shadows and wreak havoc all over the city. Sweet S. is the first victim.
• Loading Screen: A few of the transitions are made to look like loading screens, having a percent number that quickly increases for a few seconds before reaching 100%.
• Lohengrin and Mendelssohn: In Season 7 episode 1, Smart S. sets up a ceremony for when the Global Leader establishes a diplomatic relationship with Dog Planet. The whole thing plays out like a wedding, complete with the Mendelssohn music playing.
• Long Runner: Has been on the air for 10 years as of July 2nd, 2020.
• Look Behind You:
  • In Season 5 episode 22, Big M. does this to distract the mailman, who is asking for postage to pay for his package, and get his mail for free.
  • Season 8 episode 37 begins with Big M. trying to take a cane from an old man since he wants to take everything that looks like a wand. He tells the man "See there! You've got it!" while pointing behind him to distract him and pry the cane from his hands.
  • In City of Mystery episode 3, Lisa uses this distraction to run away from some angry village folk who are after her.
• Loves Me Not: At some point in episode 49, Doctor H. plucks the petals off of a flower to predict whether Miss Peach loves him. Whether he lands on "loves me" or "loves me not" is never shown or mentioned.
• Luminescent Blush: Doctor H. sometimes has luminescent blushes when he is admiring Miss Peach.
• Lying on a Hillside: In episode 6, Smart S. and Careless S. are lying on the ground watching for shooting stars. Smart S. wishes to be as handsome as he is forever, and after a humorous remark from Careless S. realizes one second too late that he's getting something else instead - hit by one of the shooting stars.
• MacGuffin: The elemental wands in Season 8 are sought after by both the Supermen, who want to use them to wake up the president, and Big M. and his henchmen, who want to use them to assassinate the president instead.
• Magic Carpet: The title card of Season 8 episode 11 shows Big M. as an Arabian princess riding a flying carpet.
• Magic Kiss: The frog prince in Season 6 episode 37 is looking for a princess who can turn him back into a human prince with her kiss. Big M. finds a bunch of "princesses" who can give the kiss he needs, specifically the monsters he recruits for his evil missions, but none of them can give the kiss he wants. It's later Sweet S. who gives the magic kiss that turns him back into a normal prince.
• Magic Misfire: In Season 8 episode 23, the plant people that Careless S. meets have a rather simple backstory for how they came to life - the old grandmaster Xiao Haha accidentally fired a spell from his wand after tripping, and the spell happened to hit the plants.
• Magic Staff: In Season 8, Xiao Haha has four magical staffs, each with a specific elemental power (fire, air, electricity, and ice), hidden in his Portal Book A History of Magic. The Supermen have to find them in order to awaken the Global Leader from his sleep.
• The Magic Touch: The rock man from episode 37 can turn anything into stone simply by touching it.
• Magical Camera: In Season 4 episode 43, the monster of the week uses a camera that traps people in the developed photos that are produced by it after a picture is taken.
• Magical Clown: Clown Monster from Season 7 episode 13 uses a magic orb on his outfit to absorb laugher and fire it against the person who is laughing, turning them into stone.
• Magically-Binding Contract: In Season 8 episode 16, Little M. makes a deal with a talking book that allows him to freely wish four times for whatever he wants, and he decides to use this ability to impress Big M. so that he doesn't think he's useless. He signs a contract that this is the case under two conditions: Firstly, he must not tell anyone about the contract, and secondly, if he uses up all of his wishes but still isn't able to impress Big M., the book will take one thing from him.
• Magnetism Manipulation: Smart S. has the ability to attract metal objects and move them to wherever he wants.
• Make Wrong What Once Went Right: In one arc, Big and Little M. get the chance to go back in time so that they never lose the Jixie stones, thus putting the Heroes on their side now. Also a sort of Alternate Reality Episode, since the Heroes' personalities are radically changed (i.e. Careful S. is now talkative, Happy S. is always sad, Sweet S. acts more cowardly, Smart S. is less confident in himself, and Careless S. has a Photographic Memory).
• Man-Eating Plant: In Season 4 episode 30, a big plant tries to eat Happy S. but misses him, causing its teeth to crack.
• Man-Made House Flood: In Season 3 episode 17, Sweet S. is distracted by the thought of her mysterious rescuer to the point that she forgets she has the sink on, and the water overflows and floods Doctor H.'s house.
• Maneki Neko: Keke's uncle Lucky Cat, from Season 7 episodes 23 and 24 (Multi-Part Episode), is based on this.
• Maniac Monkeys: As shown in episode 31 of Season 2, among planet Gray's graduate monsters is a giant ape that Big and Little M.'s commander describes as "ferocious".
• Marilyn Maneuver: In Season 5 episode 5, the monster of the week uses his robotic hands to suck in people's money. A robot citizen wearing clothes similar to Marilyn Monroe's signature outfit is seen trying to keep her skirt down as the wind from the monster moves it around.
• Marshmallow Dream: In the title card for episode 31, Big M. dreams that he's got a big dinner layed out in front of him. In the real world, Big M. is chewing on Little M.'s foot.
• Masking the Deformity: In Season 7 episode 13, this factors into Clown Monster's backstory. Clown Monster hides his face behind a mask because he has facial paralysis that makes him unable to smile. He vowed to make everyone smile forever, donning the Clown Monster alias and using a gem on his clothing to freeze people into stone whenever they laugh.
• Matrix Raining Code: The title card of episode 16, which is about Doctor H. going to cyberspace to deliver a birthday card to Miss Peach, features green raining number code against a black screen, with different strings of numbers and letters going in different directions with the characters' faces in them.
• Mayan Doomsday: Referenced in Season 8 episode 28, where everyone in the castle, including the Supermen and the King, thinks Careless S. is joking about a meteor headed right for the palace. One visitor writes his comment down in his book of the top jokes, right above one that reads "2012 is the end of the world".
• Meadow Run: Parodied in Season 5 episode 33, where a robot man and woman run towards each other on a beach, clearly intending to hug each other, only to be interrupted when a giant statue of one of the Supermen appears and blocks their way.
• Mean Character, Nice Actor: In-Universe, during the "Fairy Tale Adventure" story arc in Season 4, kind, compassionate Sweet S. is made to play the role of the evil queen from Snow White.
• Meaningful Name: Many.
  • The main heroes all have full names ending in "xin" (and then "chao ren", meaning superhero). Kai'xin means happy, Tian'xin means sweet, Chu'xin means careless, Xiao'xin means careful. Hua'xin's translation of his name does not really fit him, however.
  • The "zhai" of Doctor H.'s 'real' name means someone who prefers to stay at home, or, in other words, does not like going outside.
  • Big Guai is really Big Monster, and Little Guai is Little Monster.
  • Headmaster Tele: He's a headmaster, and his head is a television.
  • Mr. Lightbulb, whose head is a lightbulb.
  • Many other heroes also have names ending in "xin chao ren". Duo'xin means suspicious (of others), Shang'xin means sad, and E'xin means disgusting (in this case, it refers to his dislike of dirty things rather than being dirty himself).
• Meat-O-Vision: In Season 5 episode 36, Happy S. imagines objects around him, such as robots and tree leaves, turning into lollipops, though he doesn't try to eat any of them. This distracts him for long enough that he nearly gets hit by a car on the street. Later, the monster of the week traps him in that fantasy.
• Medium Awareness: A few of the characters seem to be fully aware they're in a cartoon, with Season 8 episode 9 in particular having Big M. directly lampshade how the characters have limited mouth movements whenever they speak after Little M. incorrectly lip-reads Happy S. and Smart S.'s speech as them repeatedly saying "papa".
• "Meet the Celebrity" Contest: In episode 44, Doctor H. enters a fitness competition with the prize implied to be meeting news reporter Miss Peach. That is "implied"; he actually meets Mr. Lightbulb, who points out that he never actually said the celebrity he got to visit would be Miss Peach.
• Mental Picture Projector: The heroes have memory projectors built into them, allowing them to show their memories to others.
• Me's a Crowd: At the end of episode 27, Big M. clones himself in yet another attempt to take over the planet. The clones argue over which one is in charge.
• Message in a Bottle: This is how the inhabitants of Planet Guling communicate from far distances, since the planet is prehistoric-themed and thus they have no advanced pieces of technology to use to communicate.
• Mind-Control Music: The hypnotizing monster in Season 2 episode 16 hypnotizes people by playing a violin.
• Miniature Senior Citizens: Downplayed; a recurring elderly lady in a yellow shirt is noticeably shorter than adults younger than her, including 29-year-old Doctor H., but she doesn't deviate from the heights of the other characters too much. It's slightly less downplayed in the seasons after the art shift, which changed the characters to look more lanky but didn't change the elderly lady's height by much.
• Mini-Mecha: The Car Knights; sometimes they appear to be pretty big, however.
• A Minor Kidroduction: Season 9 begins with a scene showing young Doctor H. building a time machine and trying and failing to save his father from being abducted by aliens.
• Mirror-Cracking Ugly: Season 3 episode 3 showcases Big M. being so ugly that it makes everyone who sees his face vomit. Besides that, though, one part of the episode has him look into a mirror, which breaks from his ugliness in an instant.
• Misleading Package Size: In Season 3 episode 24, the spherical bomb Big M. receives in the mail is around the size of the palm of his hand if not smaller, but it's contained in so much packaging wrap that it looks a lot bigger.
• Mistaken for an Imposter: In episode 27, the gang becomes convinced that an evil clone of Happy S. is the actual Happy S., much to the utter shock of the actual Happy S.
• Mistaken for Spies: The premise of Season 7 episode 40 hinges on the Ambassadors of the dog and cat planets thinking their assistants, Gongsun Dog and Show Cat, are acting as spies for their respective rival planets when a fight they are having looks more like they're being nice to each other.
• Mistaken from Behind: In Season 8 episode 12, the way the merchant's suit of armor looks before he takes it off makes Careful S. think he's a certain character who had died earlier and follow him from behind.
• Mister Seahorse: Season 6 episode 41 has Big M., a male, develop a bump in his tummy and think he's pregnant with a dinosaur after eating a pumpkin which he thinks contains one. When he does give birth, he realizes he didn't actually give birth at all and it was just him farting.
• Mobile Shrubbery: Big and Little M. often use this.
• Monster Clown: Yup, and his name is literally Monster Clown (or Clown Monster)! He's so dangerous that he's been put in a special prison for criminals that will not be released, but in Season 7 episode 13, Big M. manages to do just that. Clown Monster's superpower is that he absorbs the laughs of others and turns them into stone with the energy.
• Monster of the Week: The entire series. Although, most monsters make recurring appearances, and some even have detailed personalities and backstories.
• Motivation on a Stick:
  • The Planet Guling inhabitants use apples dangling on strings to make their dinosaur rides move.
  • In the Season 10 end credits, Big M. passes by Careful S. holding a hunk of meat on a string. Little M. is trailing behind him, attempting to grab the meat.
• Mouthscreen: In Season 7 episode 50, when Kalo says "Goodbye to you all" right before he self-destructs himself to defeat the enemy spaceships, the shot is a close-up of the character's mouth.
• Moving Right Through: In episode 21, after having been separated from Little M. for most of the episode, Big M. finds his corporal buddy walking up to him, or so the resulting "reunion sequence" would have you believe; Little M. is actually headed for an ice cream stand that happens to be nearby. Big M. angrily points out that he's right there, and he and Little M. have an actual reunion sequence... that lands them right above a construction site where they fall into some unstable ground.
• Mr. Vice Guy: Mr. Lightbulb is greedy, but the end of any episode featuring this always shows him redeeming himself in some way.
• Multi-Part Episode:
  • The first two episodes of Season 1 are a two-parter about the origin of the Supermen.
  • The first two episodes of Season 2 are a two-parter about Big M. and Little M. getting an amnesiac Careful S. to work for them.
  • Season 2 episodes 17 and 18 have the Supermen training for a basketball game.
  • The first two episodes of Season 7 show the ambassadors of the dog and cat planets meeting the Supermen.
• Mundane Utility: In Season 5 episode 22, Kalo uses his Voluntary Shapeshifting to transform his hand into a blade and... slice a watermelon. Headmaster Tele, who had said a few seconds earlier that he would confiscate any weapons he sees on the campus, then proceeds to confiscate Kalo and his watermelon.
• Mushroom House: Planet Guling has a large mushroom building with a telescope on the top.
• Mystery Episode: In Season 5 episode 17, some hamsters in the school are discovered motionless with red liquid near them, implying somebody killed them. Sweet S. takes up the job of the detective and searches for clues as to who did it, with Smart S. being a prime suspect due to some footage she sees.

N-Z

• Names to Run Away from Really Fast: In Season 8 episode 3, Big M. wants to find an intimidating character from the book A History of Magic for Huo Haha to transform into. Little M. suggests one named the Killer King, and Big M. asks if there are any that are more frightening than him. Little M. suggests another one named the King of the Killer King, and when Big M. asks for a character even more scary than him, he follows it up with... the King of the Killer King's Wife.
• Nap-Inducing Speak: In Season 5 episode 29, Careful S. gives a speech for Doctor H. that goes on for three hours. By the end, he finds that the robots who were listening to his speech took the time to get some sleep, with one commenting that this is the first time he's gotten a good sleep uninterrupted.
• Neat Freak: Sick S. hates germs so much that he has a special rubber suit for when he has to get close to unsanitary things.
• Neck Lift: In Season 7 episode 50, Caesar holds Kalo by the neck during their battle, choking him. Careful S. saves Kalo from it.
• Negative Continuity: Rarely, but there are two major moments of it.
  • Season 8 episode 34 having some of the discontinuities (and a few of them were obvious) which would be rather unwieldy to list here, but a few might be intentional (probably on the writers' parts).
  • Season 14 episode 45, after Happy S. and the other four Supermens plus Nuclear S. are turned evil by the Power of Dark, brief clips of season 14 episode 44 where Happy S. and others fight the possessed Nuclear S. (the Dark Demon) are shown and rewinded to before Nuclear S. absorbs the Power of Dark.
• Never Smile at a Crocodile: In Season 3 episode 33, Smart S. finds himself in a pit of crocodiles, who try to attack him.
• Never Trust a Title: Episode 20's official title is "Running Away from Home", but doesn't feature anybody actually running away from home. It's actually about Little M. mistaking Big M. mysteriously disappearing as him leaving Planet Xing for Planet Gray, their home planet.
• New Job Episode: Sweet S. learns how to be a hospital nurse in episode 34. The job only lasts for that episode.
• New Season, New Name: Every season beyond the first one has a special name appended to it, such as Season 2 being titled Happy Heroes and the Happy Superhero, Season 3 being titled Happy Heroes and the Battle, Season 4 being titled Happy Heroes and the Adventure, etc.
• Newhart Phonecall: In Season 2 episode 31, when Headmaster Tele takes a call on the phone, the person on the other end of the line cannot be heard speaking.
• Nice Job Breaking It, Hero: In Season 2 episode 11, Happy S. enlarges the sun with the magnifying glass to melt the ice monster. It works well to melt the monster, obviously, but then there's the matter of Happy S. having made the sun big enough to make it dangerously hot on planet Xing Xing... oops.
• Niche Network: Exaggerated in Season 7 episode 41, where Doctor H. likes one of Miss Peach's dramas so much that Mr. Lightbulb decides to start a channel that only airs that drama 24/7. Doctor H. continues to rewatch the drama, only to become bored by it later on.
• Nobody Poops:
  • Averted for the most part, as both the Heroes and the citizens of Planet Xing Xing are shown needing and using the bathroom, despite them being robots.
  • Possibly played straight for the Adelians.
• No Ontological Inertia:
  • In Season 7 episode 13, Monster Clown uses a gem on his chest to absorb laughs and turn people into stone, the idea being to freeze their smile in place forever. When the gem gets destroyed near the end of the episode, it reverts the petrified people to normal.
  • In Season 8 episode 12, the magic pen flat out has text on it saying that if you destroy it, anything that was drawn with it that came to life will disappear.
• No, You: In Season 7 episode 6, the sick monster tries to get to Careful S. through a crowd of people who were waiting for him. The monster tries to get past an elderly woman, calling her an "old lady" as he does so... only to be knocked back by the woman, who shouts "YOU'RE an old lady!"
• Non-Fatal Explosions: None of the explosions seen throughout the show harm characters beyond burning them to the point of appearing singed.
• The Noseless: The Adelians do not have noses for the first nine seasons. The Art Shift starting from Season 10 adds noses to their designs.
• No Celebrities Were Harmed: Season 8 episode 12 has Little M. bring some famous artists to teach Big M. art lessons. Two of them are named Van Golf (a reference to Vincent van Gogh) and Va Dinci (a reference to Leonardo da Vinci).
• No Mouth: In Season 7 episode 15, the fact that Hello Kitty usually doesn't have a mouth is spoofed when Fat Tiger is checking the potential Cat Planet recruits, sees a cat who looks an awful lot like Hello Kitty, and asks her how she can catch mice without a mouth.
• No-Neck Chump: A few of the monsters, such as Sick Monster and Fish Monster, have no discernable neck.
• No Sense of Direction: Surprisingly, Careful S. gets lost easily without visible directions.
• No Social Skills: Careful S. doesn’t tend to do well in social situations due to his quiet and stoic nature. The only exception is when he is with Kalo.
• No Such Thing as Alien Pop Culture: Averted. Planet Xing has its own entertainment industry with unique television shows, films, etc. that its inhabitants watch.
• Non-Human Head: One of the townsfolk inhabiting the fantasy world in Season 8 has a head resembling a flower pot.
• Non-Mammalian Hair: In the Season 5 arc where the Supermen are shrunken to the size of ants, two of the ants they meet, the queen and the pink girl ant, both have heads of hair.
• Not Allowed to Grow Up: While the Supermen not aging could be explained by them being robots, there are kid and adult robots on Planet Xing, suggesting that actually can grow into adults. At any rate, the show's been on the air for almost a decade and the main characters (regardless of them being mechanical or organic) have displayed no signs of aging.
• Not Quite Flight: Sweet S. flies using her bubbles, and Smart S. flies through his electromagnetism.
  • Chu and Xiao are sometimes shown to be flying via Tian’s bubbles.
• Not-So-Innocent Whistle: In episode 14, Smart S.'s magnetism is made way too powerful due to a super battery being installed in him. This causes him to accidentally attract Planet Gray, much to the delight of Big M. who immediately tries to pinch himself to see if he's dreaming. He then realizes he pinched Little M. by accident and whistles as if nothing happened.
• Not So Stoic: In Season 7 episode 50, when Kalo sacrifices himself to save the planet, even Careful S., who is usually stoic, is bawling massively.
• Not That Kind of Doctor: Averted with the original, since the Chinese language has a distinction between medical doctors and other academics. Doctor H. falls into the latter category. Although this an interesting case, as since the Heroes are robots and Doctor's specialty is mechanics, he can often serve as a doctor for them.
• Not What It Looks Like: In Season 7 episode 26, Punk Monster does a Heel–Face Turn and vows to help people instead of hurting them. One of the nice things he does is to help a boy open a can of tomato soda, which he finds so tough that he whips out a knife to open it and gets some of the soda on the kid, who falls over. When Sweet S. visits the scene, it looks like Punk Monster killed the child since the tomato soda on the child and the monster's knife looks like blood.
• Numbered Sequel: Certain seasons sometimes refer to the show as "Happy Friends [number of season]". The English-dubbed episodes forgo the usual tradition of appending a new name to each season and opt to go entirely by the season number instead.
• Ocular Gushers: Anytime someone cries, their tears gush out like waterfalls, with some notable exceptions. Sad S. utilizes this as one of her attacks.
• Once per Episode: In Happy Heroes and the Magical Lab, the "Explain This!" segments where Doctor H. provides information about some kind of plot-important piece of technology.
• One-Word Title: The official English titles for a few of the Season 7 and Season 8 episodes have one word.
  • Season 7 episodes 1 and 2 (Multi-Part Episode), "Extraterrestrial".
  • Season 8 episode 11, "Floating".
  • Season 8 episode 18, "Counterattack".
• Onion Tears: In episode 10, as everyone is fawning over how good the food from the rice cooker tastes, it gets to the point that they cry over it... or not. It's actually just from Sweet S. chopping up some onions.
• Only the Chosen May Wield: In Season 10, Kalo finds a trident possessed by evil and somehow manages to wield it, when Big M. and Little M. are incapable as seen in their previous attempts. Similarly, Careful S. finds the Sword of Justice to combat this evil, and it is revealed only those empowered by justness can wield the sword.
• Opaque Lenses: In episode 32, as Mr. Lightbulb shows the heroes around the hot spring, Smart S. wears sunglasses with lenses that completely cover his eyes.
• Open Sesame: In Season 3 episode 8, Careful S. chases Kalo to a cave that has its door voice-activated. Careful S. tries the voice command "open sesame" to no avail, then tries "open pumpkin", "open watermelon", and "open fruit platter". The fourth one prompts the door to open.
• Our Gnomes Are Weirder: The gnomes in Season 8 episode 30 are quite filthy and obsessed with staying that way, to such an extent that they frown on taking baths.
• Out-of-Character Moment: In Season 8 episode 36, Big M. is genuinely surprised to learn he's a cartoon character when he meets the show's production staff, which is weird when you consider that he has openly acknowledged he's in a cartoon, and that Little M. and Huo Haha have both broken the fourth wall in his presence, multiple times before.
• Out-of-Context Eavesdropping: In Season 2 episode 32, Careless S. overhears Happy S. and Sweet S. saying they want to "take over the entire world" and "take care of the doctor and that last Superman", leading him to believe the note he found saying the others have turned against him and want to kill Smart S. is true. However, Happy S. and Sweet S. are just playing a video game with Careful S., and the game's villain is called "the doctor".
• Overnight Age-Up: In Season 10 episode 28, one of Planet Gray's monsters uses an aging gun to turn Careful S. and Kalo into senior citizens.
• Overreacting Airport Security: In Happy Heroes and the Magical Lab episode 5, Careless S. is helping out at the airport's security scanner when the security machines not working forces people to check baggage for dangerous items manually. Doctor H. comes along with a box of milk cartons, and Careless S. has him drink all those cartons to prove they're just milk.
• Pac Man Fever: Whenever characters are shown playing video games and the game is seen on-screen, it utilizes previously-used 8-bit art shift footage and couples it with similarly retro-sounding music to fit.
• Paper People: In Season 8 episode 5, Huo Haha afflicts the Supermen with different magic spells, and Smart S. looks normal until he turns around and reveals he was turned flat.
• Parents for a Day: In Season 3 episode 48, Careless S. finds a babified Big M. in the Supermen's house and takes care of him. This works out a bit painfully for Big M. since Careless S., in his usual forgetful fashion, doesn't make the best parent for a baby. He watches a parenting program that teaches him how to make a milk formula for Big M. to drink, pouring the contents right into Big M.'s mouth instead of into the bottle he needs to feed him with, for example.
• Parody Product Placement: In the Season 4 finale, as the race is about to begin, Mr. Lightbulb tells the competitors to prepare... to advertise, and then interrupts with an advertisement for a drink. He is then informed that the drink was made by Sweet S. and faints, and the race begins.
• Pass the Popcorn: In Season 3 episode 12, Big M. and Little M. eat popcorn while they watch Kalo confronting Arcas.
• Past Experience Nightmare: The beginning of Season 8 episode 7 reveals that Careful S. is so upset over Kalo's death that he has nightmares about it.
• People Zoo: The aliens in episode 4 capture Big M. and Little M., intending to put them on display like zoo animals.
• Percussive Maintenance: In episode 16, Big M. wants to go inside Doctor H.'s internet router but can't get it working, so he slams it against the table multiple times. Turns out he unplugged the machine by accident.
• Perma-Stubble: Huo Haha has a noticeable stubble on his chin.
• Personal Raincloud: In Season 8 episode 14, Big M. gets a personal raincloud twice - once when he's informed by Little M. that he's somehow not qualified to be a loser, and again when he's snubbed out of a potential new job as a sweeper.
• Phantom-Zone Picture: In Season 4 episode 43, the monster for that episode traps people in photos by snapping pictures of them with a camera. We get to see how it works firsthand with Big M. and Little M., who are able to talk and move freely in the black void of the photo but can't interact with the outside world.
• Piggy Bank: In Season 3 episode 11, Lightbulb Jr. breaks his piggy bank, revealing a bunch of miniature piggy banks inside. He grabs one of the little piggy banks and takes a coin from it.
• Piggyback Cute: In Season 8 episode 27, Careful S. and his Sapient House friend are at the beach and see a man giving his girlfriend a piggyback ride. The house thinks it looks fun and has Careful S. give her a piggyback ride, but with her being a house, she proves too heavy for Careful S. and he sinks into the sand.
• Pixellation: Season 7 episode 11 uses the trope for a quick joke. When Big M. takes off his clothes in front of a robot, the latter blushes in embarrassment as he sees the former completely naked with his offending body parts censored by pixellation. Except it's actually just a banner covering his Goofy Print Underwear and he's not completely naked.
• A Planet Named Zok: Planet Xing, at least in English materials that actually use that name or "Planet Xingxing". The Miao Mi dub averts this by calling it "Star Planet" ("xing" means "star" in Chinese).
• Planet of Hats:
  • Planet Guling from Season 6 has a prehistoric theme, complete with cavemen and dinosaurs inhabiting it.
  • Planet Woof from Season 7 is inhabited by anthropomorphic dogs. Planet Miao, its rival planet, is inhabited by anthropomorphic cats.
• Plant Person: In Season 8 episode 23, Careless S. meets a community of anthropomorphic, sentient plant people who were just normal plants until Xiao Haha tripped and accidentally cast a spell that brought them to life.
• Playing a Tree: In Season 2 episode 7, Careless S. takes the role of a tree in the school play. He swaps the role with Smart S.'s role as the prince when Smart S. gets hurt and can't play his normal role properly.
• Playing Sick: Season 3 episode 27 is about Doctor H. getting sick and going to the hospital. He pretends to be sick even after it's passed - going as far as to do the old "heat up the thermometer" trick to make it look like he's still running a fever - so that he can see Miss Peach, who is a nurse at the hospital he's in.
• Plot Allergy:
  • In one episode, an assassin cat tries to kill Careful S. but gets mistaken to be a stray cat. Careful S. takes care of him despite being allergic to cat fur. However, this allergy highlights the irony with Careful S' appearance (he looks like a black cat).
  • In one episode of Season 11, Moondance is shown to have an allergic reaction to mango when she eats Sweet S.'s pudding, which contains it.
• Plucky Comic Relief: Little M. provides a majority of the comedy during any scene which features him and Big M.
• Polar Penguins: Penguin Monster, whose name speaks for itself, has ice breath powers.
• Police Are Useless: Most of the time. They do their best in protecting the planet, but the enemy is usually too good for them and it's up to the heroes to save the day.
• Popcorn on the Cob: In Season 3 episode 31, the monster uses a speed-boosting apparatus on his tail, and the flames from it heat up a nearby man's wheelbarrow of corn cobs and makes the corn kernals turn into popcorn.
• Popping Buttons: In the "Fairy Tale Adventure" story arc's take on Cinderella, Cinderella (played by Miss Peach) is portrayed as being overweight due to an eating problem. During the ball, Miss Peach eats a piece of cake, causing the buttons on her dress to pop out and hit a nearby robot attending the ball, some wine glasses, and one of the lenses on Doctor H.'s glasses.
• Portal Book: In Season 8, the heroes travel into a book titled "A History of Magic" to retrieve Xiao Haha's staffs and wake up the Global Leader.
• Potty Emergency:
  • Smart S. has one in episode 9 after being given expired milk as part of a sponsorship deal. He gets there in time, though the sponsorship deals keep bugging him.
  • In episode 42, Big M. accidentally eats an orange he laced with diarrhea powder and desperately has to go to the bathroom. The only problem? There's a very long line of people waiting to use the bathroom as well.
  • In season 2 episode 34, Careful S. of all people has a brief one when he and Happy S. return to their house with an escaped prisoner who they think is Doctor H. When they have to go to rescue the real Doctor H. who was mistaken for the criminal, he clones himself so one can use the bathroom while the other goes to rescue Doctor H.
  • Smart S. also has one in season 10 episode 9, while trying to act more like Careful S., though he hides it until he gets into a stall.
  • Smart S. has another one at the beginning of season 10 episode 37. He hears Big M. and Little M. plotting something in the adjacent stall, while he’s going.
• Power Copying: In Season 5 episode 42, the infected villain of the week wears goggles that let him copy the mannerisms of anyone he scans with them. This extends to Careful S.'s duplication powers when he scans him.
• Previously on…: The first two episodes of Season 2 form a Multi-Part Episode. The second of the two episodes has a quick clip at the beginning showing what happened in the previous part. Most other multi-part episodes do the same thing.
• Prisoner Exchange: Oversensitive S. believes that the Heroes captured his companions Sad S. and Sick S., and so he kidnaps Doctor H. and demands a hostage trade. Of course, the Heroes didn't capture anyone, so they send Sweet S. and Careless S. (disguised as Sad S. and Sick S.) respectively in order to get Doctor H. released, then fought themselves out of the situation.
• Production Foreshadowing: In Season 9 episode 1, Miss Peach interviews the producer of a new show called Careful S. and Kalo, a rumored spin-off of Happy Heroes that was confirmed to be in development in 2014 (this episode premiered in 2015). The 2018 mini-season Happy Heroes and the City of Mystery likely evolved from this spin-off, given that it stars Careful S. and Kalo in a prominent role.
• Profile View Gag: In Season 8 episode 5, Huo Haha inficts different spells on the Supermen. Smart S. is commented on as looking normal, but then he turns around and reveals himself to have been turned flat.
• Promotion to Opening Titles: Cockroach, a minor character from Planet Gray, appears in the opening for Season 2. She doesn't actually have a major role in that season, however.
• Properly Paranoid: Oversensitive S. is over-suspicious of anything and everything, including random acts of kindness and red bits of fuzz (as potential laser beams, of course). Subverted in that it's almost always nothing to worry about.
  • Except perhaps once, during the aforementioned Prisoner Exchange, Oversensitive S. can tell it's not Sad S. and Sick S., so he nearly kills Sweet S. and Careless S. with his fire superpowers.
• Public Domain Character: Pinocchio (renamed Pino, at least in Miao Mi's English dub) appears in Season 8 episode 31, where Happy S. helps him to find his nose.
• Pumpkin Person: One of the inhabitants of the fantasy town in Season 8 has a pumpkin for a head. Episode 12 of that season reveals that he's a professional artist named Van Golf.
• Pun-Based Title:
  • The official English title of Season 8 episode 24 is "A Shocking Distance", referring to how the episode is about Big M. and Little M. being hit with a curse that causes them to be hit by lightning if they stand less than 99 feet from each other - you know, a "shocking" distance!
  • The English title of Season 8 episode 35 is "Villains Always Shine". The episode is about Big M. consuming luminescent mushrooms that make his tummy glow, in a literal variation on a villain always shining.
• Punny Name: In Season 2 episode 6, Headmaster Tele sounds like he's complementing his students when in reality he's talking to the bus driver, who is named Tong Xuemen (同学们, pinyin "tongxuemen", means "classmates"; the name of Tong Xuemen the bus driver is one Chinese character off but pronounced the same way). The English version of the episode reworks the joke so that the bus driver is instead named Avery One, a soundalike of "everyone".
• A Pupil of Mine Until He Turned to Evil: The backstory of Shao Long, a character introduced in Season 2 episode 25, is that he was Headmaster Tele's favorite student at Superstar School and was taught all the Headmaster's tricks before turning to the dark side when he grew up out of a desire to be the best. Headmaster Tele, upon learning this, is devastated.
• Puppy-Dog Eyes:
  • In episode 30, Little Cutie attempts to distract Happy S. from attacking her by making cute-looking eyes at him. It distracts Happy S. for just long enough to give Little Cutie a chance to attack him back.
  • In Season 5 episode 25, a Planet Gray store owner refuses to sell his energy to the Supermen, who use puppy-dog eyes to try to convince him to sell it to them. This is ruined by Careful S. making an un-smile that causes the store owner, and those around him, to run out of the scene, stores and all.
• Pure Energy: The Heroes can fire blasts of this stuff from the gems on their foreheads.
• Purple Is the New Black: A non-villain variant. Later seasons change Careful S.'s suit from black to purple.
• Quarter Hour Short: Every episode is about 10 to 12 minutes long.
• Questioning Title?: The official English titles for a few of the Season 7 and 8 episodes translated by Miao Mi count as such:
  • Season 7 episode 35, "Who Has Replaced Kalo?"
  • Season 7 episode 42, "Who Reported Me Again?"
  • Season 8 episode 19, "Which Is the Route?"
• Rage Against the Author: In Season 8 episode 36, Big M. finds himself in the office that produces Happy Heroes and realizes that the script writer is the one who's been putting him through so much agony. He then holds series director Huang Weiming at gunpoint in an attempt to force him to give him all the elemental wands before realizing the writing in the scripts can be erased and taking the script so that he can erase everything in the Happy Heroes universe from existence.
• Rapid Aging: If an Adelian uses up enough energy too quickly, they will age rapidly and become noticeably wrinkled like a senior citizen.
• Rapid-Fire Fisticuffs: Happy S. delivers enough punches in quick succession to make his hands visible as blurs a few times. For instance, in Season 7 episode 18, this happens as he's fighting the dog-turned-vicious-monster.
• Rapid Hair Growth: In Season 5 episode 4, Big M. laces a brand of hair lotion with a formula that causes those who use it to almost immediately grow a bushy beard. This turns out far more serious than you'd think it would, as the beards are long enough to cause problems with those who have one; for example, one robot citizen gets his beard stuck in a fan while another robot's beard pull him down the toilet as he flushes it.
• Reading Lips: In Season 8 episode 9, when Big M. ruins the sound on his Crystal Ball, Little M. claims he's a master lip-reader and attempts to decipher what Happy S. and Smart S. are saying. Unfortunately, he happens to be in a cartoon where the mouth movements on characters are quite limited, rendering any attempts at lip-reading useless.
• Real-World Episode: Season 8 episode 36 has Big M. coming to the Happy Heroes office and meeting Leo Huang. Cue Rage Against the Author for all the crap he's been forced to undergo.
• Really Dead Montage: One character sort of gets one, as they look at the images and scenes flashing in front of them right before they die.
• Recursive Canon:
  • According to episode 27, Happy S.'s favorite cartoon is Happy Heroes.
  • In Season 4 episode 49, a robot child mentions that, thanks to the large bubble dome created by Sweet S. and covering the city, that "I can't go home to watch Happy Heroes!"
  • In the first episode of Season 7, Mr. Lightbulb advertises and tries to sell in-universe DVDs of Season 6 of Happy Heroes.
• Red/Green Contrast: Main character Happy S. is mostly red in color while the main villain Big M. wears a suit of green armor.
• Reflective Eyes: Sweet S.'s eyes become reflective twice in Season 5 episode 17, once when she sees footage of Smart S. seemingly perpetrating a crime, and again when she sees Happy S.'s mouth covered in tomato juice resembling the blood on the hamsters' cage.
• Regained Memories Sequence: In season 2 episode 2, Careful S. is fighting with the other Supermen due to having developed amnesia and being convinced he is working for the villains. Mid-battle, Careful S. collides with a wall inside his Car Knight and some connectors inside his head are brought back together, leading to his remembering who he really is and causing a number of frames of the other Supermen and Doctor H. to quickly flash by the screen for a few seconds.
• Remaster: The Season 1 and Season 2 episodes were originally aired in fullscreen before being given widescreen HD remasters for future releases (such as the Youku copies of the episodes).
• Repeat Cut: In Season 3 episode 48, the clip of Little M. shooting Big M. with Doctor H.'s aging gun gets repeated twice after he makes the shot.
• Repetitive Name: A location name example. The Lookus dub calls planet Xing by the name of "Xing Xing".
• Replaced the Theme Tune: The original theme song, "Happily Flying Forward", is replaced in Season 9 with a new song called "Flying Over the Rainbow". This song was itself replaced in Season 10 with "Dreamland". The Magical Lab and City of Mystery mini-seasons both have unique theme songs of their own as well.
• Retraux Flashback: In the post-art shift seasons, flashbacks to pre-art shift events are presented as they were in the original episodes and movies, without being reworked into the new art style.
• Revenge of the Sequel: The 10th season is officially titled Happy Heroes and the Return of the Superhero.
• Ridiculously Human Robots: Pretty much the only difference between the robots and the humans is appearance (sometimes), and that some robots (including the heroes) like to drink oil.
• Riding into the Sunset:
  • Referenced in Season 2 episode 16. Big and Little M. are walking away from the school and into the sunset when Little M. mentions that he's only seen this happening in movies and that it's rather old-fashioned. Big M. says that it's actually a sunrise and that it's not old-fashioned.
  • Season 3 episode 33 ends with Smart S. carrying Careless S., who has a hurt leg, into the sunset.
• Right on Queue: In episode 42, Big M. has to use the bathroom because he accidentally swallowed an orange he laced with diarrhea powder. There's a long line of children waiting to have their number called out so they can use the bathroom; Big M.'s number is 108 while the child he sees is number 28.
• Robinsonade: In episode 38, the heroes wind up draining all their energy while fighting a wrecking ball monster, thus stranding them on the island where the fight took place.
• Robot Antennae: A vast majority of the robots inhabiting planet Xing Xing have an antenna on their heads.
• Robot Dog: Numerous robot dogs are on the futuristic Planet Xing. There are organic dogs on the planet as well, though, such as the one owned by the blind artist from one episode of Season 7.
• Robot Hair: Some of the robotic citizens of planet Xing Xing have full heads of hair.
• Robot Me: In Season 5 episode 10, Big M. sends a robot version of Doctor H. to the Supermen's house to collect data for him. This fails since the computer's eye scanner can't read the robot's pupils, so Big M. sends mind-controlled Doctor H. himself to go get the data instead.
• Robotic Reveal: At one point in Season 6, it's revealed that Buding, the Village Mayor's daughter, is actually a robot.
• Rock Monster: The monster-of-the-week in episode 37 is a rock creature with the ability to turn anything into stone by touching it. He touches a tree and petrifies Careless S., who had been resting on the tree when the monster passed by it. It eventually turns out that the rock monster is actually Mr. Lightbulb, of all people.
• Rock–Paper–Scissors: In episode 23, Big M. and another person wanting to be a teacher for the superhero class do a round of rock-paper-scissors to decide who gets chosen. The other person wins.
• Role Swap Plot: In Season 8 episode 7, Happy S. discovers Careful S. had written this sort of story in a notebook, featuring him and Kalo in swapped roles. Sound fine and dandy? Kalo had died before the events of this episode, and the story Careful S. wrote is about what it would be like if he had died in his place. Careful S. misses his buddy that much.
• Roll Out the Red Carpet:
  • In Season 5 episode 12, Little M. brings her mother to the school he goes to on Planet Xing, and he has a special ceremony put in place for it that involves Happy S. rolling out a red carpet for her to walk on.
  • In Season 7 episode 3, Keke introduces herself by rolling a red carpet onto the floor and walking into the classroom on it.
• Rolling Attack: In Season 3 episode 4, the stone monster curls up and rolls at the Supermen a few times as they are fighting each other.
• Romantic Spoonfeeding: In Season 3 episode 31, after he defeats the monster in a fight in the sky, Happy S. falls to the ground and accidentally lands on a robot whose romantic partner had been trying to spoonfeed them.
• Rube Goldberg Device: In Season 2 episode 1, Big M. makes a device to shoot meatballs at some guard dogs as a distraction. How does it work? Big M. scares a squirrel, which runs in fear and bumps into a hammer that knocks over a bunch of balls. The balls are dispensed onto a wheel which dumps them onto a little cardboard platform which, when weighed down, push a button that causes a robotic arm to appear and, finally, flick a meatball at the dogs.
• Running Gag:
  • In episode 48, Big M. keeps finding Careless S.'s microbombs, when then proceed to explode on him. When the heroes fight the communication machine monster, Big M. gives Careless S. one of the microbombs to use on it.
  • As for series-wide running gags, Big M. is so ugly that people throw up whenever they look at him in the face. This running gag is established early in Season 3.
• Running on All Fours: In Season 8 episode 22, Big M. sics a hungry Little M. on Happy S. in his cracker form. Little M. runs on all fours as he chases Happy S. around trying to eat him.
• Safe Driving Aesop: Episode 8 of Happy Heroes and the Magical Lab has "remember to wear your seat belt when travelling by car" as its lesson. In the episode, Big M. hijacks a car to get away from an angry man chasing him for not paying for his food, but he doesn't wear his seat belt and gets injured. After recovering from the accident, Big M. has Huo Haha cast a spell that stops everyone's seat belts from working properly, and the Supermen go to solve the problem. The episode also has Doctor H. explaining the function of a seat belt retractor (the component Huo Haha magically removed from everyone's cars).
• Sapient House: In Season 8 episode 27, Careful S. meets a house that came to life from her wizard owner using lots and lots of magic, which she absorbed overtime. The house, who is quite happy that someone is finally there to play with her, tries to help Careful S. to find the Staff of Wind.
• Saw Star Wars 27 Times: In Season 7 episode 41, Doctor H. watches a drama called "Making Paste While Smiling" starring Miss Peach and loves it so much he states his wish to rewatch it. Mr. Lighbulb decides then and there to start a channel that only airs "Making Paste While Smiling", and by the end of episode (of Happy Heroes, just to make that distinction clear), he's watched that specific drama 107 times and is genuinely tired of it. And then the Supermen express excitement about watching it one more time since it helped them defeat a monster...
• Scary Scarecrows: Simultaneously played straight and averted in Season 5 episode 6, where Sweet S. meets a scarecrow boy. The scarecrow is quite pleasant and gladly accepts Sweet S.'s food despite its awful taste, only saying he likes it so as not to hurt her feelings. Later on, after Sweet S. discovers he had been faking liking her food, the scarecrow is greeted by Big M., who is able to turn him into a monster who attacks the city and fights the Supermen when they go into action to stop him.
• Scary Stinging Swarm: In Season 5 episode 50, Doctor H. mind-controls a swarm of bees into chasing the Supermen. The Supermen fend them off by burning leaves and distracting them with the smoke that comes out of the flame.
• Schizo Tech: In Season 6, planet Guling is entirely prehistoric in nature, complete with a lack of modern technology... save for the presence of Sad S., Sick S., and Oversensitive S., who are all robots like the main characters.
• School Play: In Season 2 episode 7, the heroes perform a play at their school where a princess is turned into a swan by an evil owl wizard.
• Scooby-Dooby Doors: In Season 5 episode 23, Happy S., Careless S., Big M., Little M., Shao Long, and the school nurse with her giant injector all chase each other through a row of six doors in part of the school hall, going in and out of different doors and becoming mixed up as to who should be chasing who.
• Scooby Stack: In Season 5 episode 39, the other Supermen form a stack when they peek around an appliance in their house and find Sweet S. timing how fast Careful S. can solve a Rubik's Cube.
• Screw This, I'm Outta Here: In episode 16, when the robots in Doctor H.'s internet router copy the appearances and abilities of the heroes' Car Knights, Smart S. says "According to me, there's only one way to fix this. And that's... getting out of here!" before flying away.
• Sea Monster: Episode 24 is about the heroes trying to find a sea monster on the beach so they can defeat it.
• Second Episode Introduction:
  • Mr. Lightbulb doesn't appear until episode 2.
  • In Season 7, the Miaolings aren't properly introduced until episode 2.
• Seinfeldian Conversation: Spoofed in Season 6 episode 31, where the first conversation that Careless S. has with the cloud person Xiaolun is literally just them saying "My name is Careless S. And yours?" "My name is Xiaolun! What is your name?" repeatedly for a full straight day, and yet they cap it off with Xiaolun saying "It was a pleasure chatting with you for a day!" and Careless S. responding with "I'm happy too, let's continue tomorrow!" as if they had an actual, meaningful conversation.
• Self-Duplication: Careful S., who appears to be able to create many clones of himself without tiring out too much. At least one episode shows he is able to duplicate others as well.
• Sentient Stars: A star creature with human-like legs appears in Season 6 episode 44 and is shown to have the ability to fire energy beams, as well as to fly and teleport.
• Shapeshifter Showdown: Somewhat, between Kalo and Baer in Season 7 episode 35, but both can only transform parts of themselves into inanimate objects.
• Shapeshifter Weapon: Kalo can morph his arms into the shape of a weapon.
• Share the Sickness: In "Sickness Crisis", Little M. catches a cold, giving Big M. the idea to spread it across planet Xing, and getting himself infected as well for more ground coverage.
• She Is Not My Girlfriend: In episode 9, a fangirl notices Sweet S. with Smart S. and thinks she's his girlfriend, running off in heartbroken tears. Then Careless S. appears, and a fanboy thinks that's his boyfriend. Then, after that, Happy S. tells the fans that he doesn't have any friends at all... poor choice of words there, needless to say.
• Shifted to CGI: The movie series started to utilize CGI in 2022 with Happy Heroes 3: The Stones, the previous movies instead being in 2D.
  • Careful S., after rescuing Sweet S., and blushing as she thanks him.
  • Doctor H. and Miss Peach (finally) going on a date at the end of the 1st movie.
• Shipshape Shipwreck: In City of Mystery episode 1, Careful S. and Kalo go underwater to find the Supermen's Skill Balls and find them in a sunken shipwreck.
• Shot in the Ass: In Season 6 episode 7, an alien bee chases after Careless S. and Little M. and shoots a stinger projectile at the latter, hitting him squarely in the bottom. The stinger causes Little M. to mutate into a half-bee monster.
• The Show Must Go Wrong: In Season 2 episode 7, as the heroes are performing the school play, Big M. scatters banana peels all over the stage floor to slip them up. Cue obligatory hilarity ensuing.
• Shrink Ray: An arc in Season 5 features a similar invention - a spray with two buttons on it, one that makes things shrink when sprayed, and one that makes things grow. The shrink spray is what causes the Supermen, Doctor H., Big M., and Little M. to shrink and find themselves in an ant colony.
• Sick Episode:
  • Little M. comes down with a cold in episode 8 and starts sneezing uncontrollably. Big M., after being sneezed on by Little M. and thus getting the cold from him, is given the idea to sneeze on everyone on planet Xing Xing to make the entire population sick.
  • Season 7 episode 7 is about Happy S. coming down with a sickness after playing video games and eating entire tubs of ice cream for ten days straight. Once he hears a news report about a special medicine being sold by Big M. and Little M. that is said to cure all sicknesses, Happy S. goes out to buy one, hoping it'll actually work.
• Sickness Equals Redness: Most of the time, characters who come down with a sickness get red around the nose. This extends to the Supermen and the robot citizens of Planet Xing, the Supermen's Car Knights, and even the expressive Planet Gray logo on Big M.'s headband.
• Signature Move: Happy S.'s "Happy Knight Iron Punch".
  • Smart S.'s "Smart Knight Magnetism", "Smart Knight Electric Chain", and "Smart Knight Invincible Drill".
  • Sweet S.'s "Sweet S. Bubbles" and "Sweet S. Shield".
  • Careless S.'s "Careless Flying Missile". ^note  though a lot of times it won't be a missile that shoots out...
  • Careful S.'s "Careful S., Duplicate".
  • Oversensitive S.'s "Oversensitive Fireballs".
  • Sad S.'s "Sad Tidal Wave".
  • Sick S.'s "Sick Tornado".
  • Headmaster Tele and Dragon (his student) each have their "Twister", but they're slightly different in appearance.
• Signature Sound Effect: There's a distinct sound effect that usually plays when Smart S. uses his magnetism ability.
• Simpleton Voice: The Lookus English dub gives Careless S. a more stupid-sounding voice to reflect his forgetfulness.
• Single-Task Robot: The robot Doctor H. invents in episode 30 is made specifically to clean up trash by compacting it into a cube. This gets turned against Doctor H. and the heroes when the former accidentally causes it to hunt down and compact anything that's called "useless".
• Single Tear: Careful S. sheds a single tear after a tragic event almost happens in season 5.
• Sinking Ship Scenario: The climax of Season 7 episode 32 involves the cruise ship hitting an iceberg and slowly sinking as one of the episode's thinly-veiled references to Titanic (1997), forcing Ambassadors Wang and Miao to work together to build a lifeboat to save all the passengers.
• Sirens Are Mermaids: The mermaid in Season 4 episode 10 has a beautiful singing voice that can manipulate water. Big M. attempts to use this to his advantage, having the mermaid conjure up a giant wave to flood a ship and hurt its passengers.
• Skyward Scream:
  • In Season 8 episode 1, Big M. screams "I HATE YOU, HAPPY SUPERMAN!" when he's informed that his monsters can't get past Planet Xing's Blue-Ray Defense System.
  • In Season 8 episode 6, after Little M. accidentally trips and drops fire wands on the floor, some of them fall onto him and Big M., and the latter yells "NOW WHICH ONE IS THE REAL FIRE WAND?! NO!"
• Sleepwalking: In Season 5 episode 51, Headmaster Tele finds Little M. sleeping during the school day in numerous situations, including sleepwalking outside the school building.
• Sliding Scale of Realistic vs. Fantastic: Falls into the "Fantastic" category. Besides the extremely obvious science-fiction themes (aliens and futuristic technology such as transforming mechs), there's also the medieval fantasy setting of Season 8.
• Slipping a Mickey: In Season 3 episode 14, Big M. tries to knock the school doctor unconscious by dropping a capsule into his drink. The doctor sees through the trick and makes Big M. drink the liquid he laced with the drug.
• Slipping into Stink: In Season 3 episode 32, Big M. wants to bomb an iceberg to flood the Superstar School. He misunderstands a warning from Little M. and lands in a big pile of garbage below him trying to get to the iceberg.
  Little M.: General! Ditch, ditch, ditch!
  Big M.: "Go."^note The Chinese word "沟", meaning "ditch", is pronounced exactly the same way as the English word "go". I know. Act fast. Don't rush me.
  (Big M. runs and falls, and some garbage quickly springs in and out of view from the impact of the crash.)
  Little M.: I meant, be careful! There's a ditch!
  (As Little M. says this, the frame pans out to reveal Big M. in a hole filled with garbage, and a robot appears and dumps more garbage on him.)
• Slippy-Slidey Ice World: In Season 10 episode 23, the video game the Supermen are trying to escape has an ice world as one of its levels.
• Smarter Than You Look: Careless S. may look silly, but he is quite intelligent.
• Smelly Feet Gag: In Season 4 episode 12, Big M. and the mail robot have a fight which is interrupted by Big M.'s shoe coming off, causing the mail robot to faint from the stench of Big M.'s foot.
• Smoke Out: In Season 13 episode 6, Big M. uses a smoke bomb so that he and Little M. can get out of the Supermen's sight once they find out Big M. and Little M. intended to take over Planet Xing.
• The Smurfette Principle: Sweet S. is the only girl of the main heroes.
• Snot Bubble: In Season 9 episode 1, Big M. fakes sleepwalking to avoid catching Doctor H.'s suspicion. He produces a snot bubble from his nose to make it convincing.
• Snowball Fight: In Season 5 episode 3, a bunch of ice cream is sent flying into the sky in a rocket and falls down, and the Supermen have a snowball fight with it.
• Solar-Powered Magnifying Glass: In Season 5 episode 50, to fend off an incoming swarm of bees, Smart S. holds up a bunch of leaves and Careful S. uses a magnifying glass to reflect a ray of heat onto the leaves, burning them and creating smoke that bothers the bees.
• Solid Clouds: Throughout Season 6 episode 39, which is about Happy S. meeting a cloud-eating creature, we see Happy S. standing and walking on clouds.
• The Song Remains the Same: All the English dubs leave the opening and closing themes in Chinese, though the official closed captions for the Miao Mi dub at least provides translated lyrics.
• Sound-Effect Bleep: In Season 7 episode 10, a feud between Ambassadors Wang and Miao escalates to the point that their yelling is peppered with beeping sounds to censor their swearing, a fact lampshaded by Smart S. as he and other Supermen approach them.
• Space Is Noisy: In episode 43, Big and Little M. are able to talk freely despite being in space.
• Space Pirates: A space pirate in a spaceship greatly resembling a typical sea pirate ship appears in episode 47 and is fought off by Happy S. in his Car Knight before he can actually make off with any loot. He returns near the end of the episode to take on the Superman again, but is unwittingly battling Big M. who has hijacked Happy S.'s Car Knight.
• Species Surname: A lightbulb named Mr. Lightbulb.
• Speech Impediment: The penguin monster from Season 2 episode 40 has a stuttering problem. His name even has a stutter built into it - "P-p-p-p-penguin M-m-monster".
• Sphere Eyes: The human characters, including the Supermen, typically have large, circular eyes that are separate from each other.
• Spider-Sense: In Season 8 episode 17, Huo Haha feeds Sweet S. a magic herb that gives her the ability to predict misfortunes that are about to happen nearby, and she uses this ability to save people from harm.
• Spikes of Villainy: In the first two episodes, Big M. has spiky shoulder pads on his suit of armor. He does not have these shoulder pads in any later episodes.
• Spike Shooter: The monster of the week in Season 6 episode 21 not only has his back covered with spikes, but can shoot them as projectiles.
• Spit Take: In one episode, Starshadow does a spit take all over Moondance when he realizes how close Careful S. is to their secret base.
• Split-Screen Phone Call: In Season 5 episode 1, Big M. calls Doctor H., and both are depicted on separate sides of a split screen.
• Spot the Imposter: In episode 27, the heroes discover an evil clone of Happy S. alongside the actual Happy S. and try to figure out which one is which.
• Squashed Flat:
  • In episode 37, Happy S. is depicted in a news report getting flattened by a group of robots he has freed running right onto him.
  • In Season 8 episode 13, Big M. is given special powder by Huo Haha that causes anything it's sprinkled on to think whoever used it is its master. Big M. uses the powder on a horse pulling a carriage and gets flattened when it comes running toward him.
• Stand-In Portrait: In Season 7 episode 38, Sweet S. makes food and the other Supermen pretend to be in a painting on the wall to avoid having to eat it.
• Stewed Alive: In Season 7 episode 22, the fish monster assisting Big M. is captured by Ambassador Miao and his cat guards and stuck in a boiling pot for them to eat.
• Stink Bomb: In the first episode of Season 6, a time bomb that Big M. has Little M. place inside the spaceship taking the Supermen to Planet Guling turns out to be nothing more than a stink bomb, releasing a foul odor on Professor Limen once it does explode.
• Stock Animal Diet: In Season 7, the dog-like Woofians like to eat bones and the cat-like Miaolings like to eat fish.
• Stock Femur Bone: In Season 7 episode 1, the bone the ambassador of Planet Miao offers to the president of Planet Xing Xing is a typical cartoon depiction of a bone.
• Stocking Mask: Big M. and Little M. often wear socks as masks as they try to steal whatever item they want to steal.
• The Stoic: Careful S. generally doesn't feel many major emotions.
• Story Arc: Occasionally interposed between the regular episodes. Major ones include the Fairy Tales arc, the Mystery of Guling arc, and the Legend of a Hero arc.
• Strange Salute: The Adelians have the right-hand to the chin, palm facing downward.
• Strapped to a Bomb: In Season 6 episode 25, Suspicious S. captures Doctor H. and demands that the Planet Xing Supermen give Sad S. and Sick S., whom he believes they've kidnapped, in return; otherwise, Doctor H. will be hurt by a time bomb that's been strapped to him and is holding him on the prison wall. Doctor H. manages to briefly unhook himself from the time bomb and stop it from running, only to be reattached to the wall with a working bomb once more.
• Strong Family Resemblance: Doctor H. has a very similar hairstyle to his father.
• Stylistic Self-Parody: The characters have noticeably simplified mouth movements, a stylistic trait that's lampshaded in Season 8 episode 9 when Little M. attempts to lip-read what Happy S. and Smart S. are saying and comes to the incorrect conclusion that they're referring to their non-biological father Doctor H. since they seem to be saying "papa" over and over. Big M. berates him over this, telling him that "Every cartoon character moves his mouth like that!"
• Sudden Video-Game Moment: In Season 2 episode 27, there's a brief scene during the Supermen's training session where the art style goes 8-bit and turns into a platform game. Said scene features what are meant as the "?" blocks from Super Mario Bros. as a Shout-Out.
• Suicide as Comedy: In episode 15, Big M. fakes wanting to kill himself in order to convince Smart S. to give him the stray cat. Little M. gets in on the ploy by actually bringing out a gun to kill Big M. with, which he does not appreciate. The entire thing is played for laughs.
• Super-Deformed: One scene in the Season 9 intro depicts Doctor H., his father, and the heroes in a cutesy art style with little bodies and big heads.
• Super-Strength: Happy S. has this superpower.
• Superhero Origin: The first two episodes give the origins of the heroes - they were formed when Big and Little M. accidentally dropped their Jixie stones, which then fell to planet Xing Xing and got attached to vehicles. When Doctor H. fixed these vehicles, it created the heroes.
• Superhero School: Headmaster Tele is the principle of a school which teaches superheroes about various superpowers and similar subjects. According to what Tele says in one episode about some marks left by previous students, the likes of such famous superheroes as Spider-Man were taught at that school.
• Superheroes Wear Capes: Inverted; the superheroes don't wear capes, but Big M., the villain, wears one.
• Sweat Drop: Characters sometimes make facial expressions which have big sweat drops on them.
• Survivor Guilt: Careful S. has this after Kalo kills himself in a Heroic Sacrifice to save Planet Xing in Season 7. Season 8 episode 7 exemplifies this with him having written a story in a notebook about the roles being reversed, with Careful S. being the one who sacrifices himself and Kalo being the one who experiences the distressed symptoms afterwards.
• Sweet Tooth: Happy S. loves to eat chocolate and other sweet treats.
• Swiss-Army Tears: In Season 5 episode 17, one of the students' tears seemingly revives the hamsters that were thought to be dead. Seemingly, as it's explained by Smart S. seconds later that they were most likely just hibernating and not dead at all.
• Synchronized Swarming: In Season 4 episode 3, the flies summoned by Agent J. swarm in the shape of a giant pair of scissors to scare off some robbers from Big M.
• Take That!: In Season 7 episode 15, three cats are trying to get recruited by Cat Planet but are rejected. They look rather like Garfield, Hello Kitty, and Doraemon.
• Taken for Granite:
  • The rock man in episode 37 turns anything he touches into stone, including Sweet S., Smart S., and Careless S.
  • The pumpkin monster in Season 4 episode 12 does something slightly different - he turns people into wood instead.
  • In Season 7 episode 13, Big M. releases the criminal Clown Monster from jail. He turns people into stone by absorbing and releasing their laugh energy.
• Talk to the Fist: Kalo's arms are chained to either side of him, he can't move his legs, and the room he's in cancels out superpowers. All superpowers. So when Caesar gets closer to him to gloat, Kalo headbutts him... hard.
• Talking with Signs: In episode 15 of Happy Heroes and the Magical Lab, Huo Haha sucks the sound out of all the electric items on planet Xing Xing. This includes a screen on a building broadcasting the news with Miss Peach, who has to be accompanied by signs showing what she's trying to say.
• Tampering with Food and Drink: In episode 9, Big M. laces a glass of milk with poison and wants to give it to Smart S., who is at a restaurant with the other Supermen. While he does get the poisoned milk, he has it replaced by another, unpoisoned (but quite rancid) glass of the same drink before he can taste a drop of the first glass.
• Tasty Gold: In Season 3 episode 43, Big M. bites the coin given to him by Happy S. in exchange for one of the scratch-off tickets the former is selling.
• Team Hand-Stack: In Season 10 episode 5, the heroes do this after they've defeated the monster who was carrying the gun Careless S. really liked.
• Team Shot: The intros often contain shots of all the heroes standing together as a group.
• Team Title: The titles Happy Heroes and Happy Friends both refer to the main group of heroes and are actually used as names for the team in Miao Mi's official English descriptions for the Season 7 and Season 8 episodes, though the heroes as a group are mostly referred to as the Supermen in the show itself.
• Tears from a Stone: In Season 7 episode 50, Careful S., a robot, cries when Kalo sacrifices himself to save Planet Xing Xing from an army of invading spaceships.
• Technicolor Fire: In Season 8 episode 1, Big M. and Little M. have a fire set up that turns purple when Huo Haha appears for the first time.
• Technological Pacifist: Doctor H. creates a wide variety of non-weapon things.
  Doctor H.: Why does it have to be a weapon? The same materials could be used to create things useful to people!
• Technology Uplift: In Season 6 episode 12, Mr. Lightbulb introduces television to the technology-lacking Planet Guling, and the natives seem to enjoy it once they figure out what the TV does. Big M. uses the TV in a scheme that involves convincing Smart S. that Mr. Lightbulb, Miss Peach, and the village mayor are kidnapped.
• Teen Genius: Doctor H., when he was younger, was able to build some decent inventions. Of course, he has been able to do so since he was a young child, so that's not much of a surprise there.
• Teleportation: Careful S. has this as a superpower, but it appears that he can only do so for short distances.
• The Television Talks Back: In Season 5 episode 15, Smart S. asks why the news channel is replaying a story from earlier. Miss Peach reacts from within the screen, saying that they're low on more news and intend to replay that story for a full day.
• Temporary Bulk Change: In Season 2 episode 10, Big M. unleashes a flying saucer that causes people to gain ten pounds every time they say something honest, effectively forcing them to lie if they don't want to become so fat. The effects of the saucer, including the victims' gained weight, are reversed by the end of the episode.
• Tempting Fate: Big M., after regaining his memory in Season 2 episode 50, is informed by Little M. that someone told Happy S. their shark's weakness - the someone in question being Big M. himself while he was amnesiac, which neither character realizes. Big M. exclaims that the person who gave away the shark's weakness should be hit on the head by a flower pot and attacked by angry dogs... which is exactly what happens to him a second later.
• Tertiary Sexual Characteristics: The minimum amount of detail they usually use to distinguish females is visible eyelashes, such as with Sweet S. for example. There are some with other feminine features such as lipstick, however.
• That Poor Cat: In Season 2 episode 21, Big M. falls out of a high window. A cat can be heard meowing when he lands on the ground.
• That's No Moon: In Season 8 episode 13, everyone is trying to pull a piece of wood out of a big rock, with Happy S. suspecting it's the Lightning Staff. The rock is actually a big monster who is irritated by the object lodged in the top of him.
• The Scottish Trope: In season 13, there's a law in Planet Gray in which people are not to say the name of the queen of Planet Gray, or they will receive a jail sentence.
• Thick-Line Animation: The character have always had noticeable outlines, but they start using thicker ones in the art style from Season 10 onwards.
• Third-Person Person: Mr. Lightbulb's son Lightbulb Jr. talks like this, being the young little boy he is.
• This Is a Drill: Smart S. has an actual drill as a Car Knight, and one made of electricity when he's unarmored.
• This Is My Side: In Season 7 episode 3, Keke and Lele aren't happy to have to sit at the same school desk next to each other since they can't stand each other, so Lele draws a dividing line on the desk to separate his side from Keke's, only for Keke to keep wiping off the lines he draws since she's a neat freak. Happy S. resolves this problem by placing a strip of tape on the desk to serve as the dividing line, but the two students are still mean to each other afterwards, with each destroying the other's property when it passes through the dividing line, including a fish that Keke was imagining.
• This Is Unforgivable!: In Season 8 episode 18, Happy S. says "Unforgivable!" to Huo Haha after he accidentally bumps into him, making him drop what they both think is an elemental a staff from a cliff. Near the end of the same episode, he says the same thing to all of Big M.'s group when they make him drop what he thinks is one of the staffs down a cliff... again.
• Threatening Shark: One of the recurring monsters, introduced in Season 2 episode 50, is a flying shark.
• Three Wishes: The wishing wood in episode 35 grants the heroes three wishes, as does the bottle genie in episode 20 of Season 2.
• Through a Face Full of Fur: The various robot citizens of planet Xing Xing are shown to blush on several occasions, despite being made of metal and therefore having no logical reason to sport a visible blush.
• Thundering Herd: At the end of Season 3 episode 34, Big M. is chased down by some of the monsters. The monsters produce a cloud of dust under them as they chase after him.
• Tickle Torture:
  • In Season 2 episode 8, Careless S. shoots Doctor H.'s alarm clock from his gun. The clock proceeds to attack the "scary" monster by tickling it until it reverts back to normal size.
  • In Season 8 episode 2, the King punishes the Supermen by sentencing them to hanging... only for them to realize their feet are going into the nooses to be tickled.
  • In Season 8 episode 39, the Supermen have Huo Haha tickled to make him smile, since his smiling is what makes Xiao Haha remember some important memories.
• Time Machine: Doctor H. makes one in Season 9 in an attempt to prevent his father from being taken away by aliens. It's made out of cardboard, but somehow still works.
• Time Travel Episode: Season 9 is a Time Travel Season. The heroes accidentally start up a time machine and get sent 25 years into the past. They decide to take care of the era's young Doctor H., who has just lost his father.
• Title Confusion: The English translations can't decide whether to call it Happy Friends, Happy Hero, Happy Heroes, or Happy Superman. Most third-party sources call it Happy Heroes because 1. the Alliterative Title makes it easier to remember, and 2. there's more than one hero, so the "Heroes" part should be plural.
• Title Scream: The title card of episode 36, "Careless Goes Missing", has a robot shouting the episode's title through a megaphone.
• To Be Continued: The multi-part episodes have the text "to be continued" pop up at the end of every episode comprising the arc before the final part.
• Toilet Humor: Pops up from time to time, even among the mostly robotic population of Planet Xing Xing.
  • Most peoples’ reaction to Big M.’s face or Tian’s cooking is to puke.
  • In Season 8 episode 11, Big M. figures out a way to control where he moves as he's floating in the sky - by farting to propel himself. He runs into an aerial traffic cop while doing this and gets fined for polluting the sky with his gas.
• Token Motivational Nemesis: 雷公怪 (Thunder M.). Since in Season 9, all traces of the heroes are erased from the past, Thunder M. is likely a significant motivation for Kalo to yearn to become a hero. Revealed in Season 10, Thunder M. physically and emotionally abused Kalo by tricking Kalo into thinking he could rescue his friend when he was young. Overlaps with It's Personal.
• Token Good Teammate: Situ. He wanted to do justice like Happy S., but he was rejected, and instead ended up joining Losu/Dark Demon's team. He befriends Happy S. and is a good friend of his until he is killed by Dark Demon (allegedly Smart S.) in season 14 episode 32.
• Tokyo Is the Center of the Universe: Used with the main city, where everything happens. It's where all the invasions are always centered, it's where the Department of Defense and the Global Leader's headquarters is, and the closest city to the Heroes' home... You'd think that the invaders would have found an easier place to attack by now. This is the only city ever pictured on the planet, however. ^note Although visual comparisons make it seem otherwise, it is entirely possible that the planet is small enough for some not-really-physically-fit person to circle it in a week or less. That might have just been Played for Laughs, however.(Canon confirms that the planet is 32000 kilometers in radius, so it is much smaller than Earth. But then, according to average human walking speed, people shouldn't be able to circulate it in a week.). But then, that would lead someone to wonder why so many planets are concerned with such a small one...
• Took a Level in Dumbass: In Season 8 episode 4, Big M. uses a special powder that makes any affected targets dumber. He uses it on Sweet S. so that he can get the fire wand from her, but then he needs help from drowning in a big cauldron and all nearby sources of help, including Little M. and Huo Haha, completely fail to actually get him out of the cauldron since they drank water contaminated with the powder. Oops.
• Tooth Strip: The Supermen, Doctor H., and several other characters have undivided strips of teeth.
• Toothy Bird: The ants in Season 5 all have strips of teeth like the other characters to conform with the art style. While real-life ants do have teeth, they're outside of their body, attatched to their mandibles, rather than in their mouths.
• Totem Pole Trench: In Season 8 episode 15, one of the things Smart S. does in an attempt to enter the adult tribe's village is to stand on top of another child and wear an outfit covering the other child from sight.
• Transformation Sequence:
  • Whenever the Heroes summon their Car Knights. The sequences themselves are generally pretty short, and multiple characters' transformations will be played at once if possible.
  • Huo Haha gets a short one in Season 8 episode 1 when he uses his magic to transform himself into a robot guard. It involves a gigantic version of his toilet plunger wand encapsulating him in the plunger end and then rising off-screen, revealing him transformed.
• Transforming Mecha: The Car Knights all have a vehicle form and a battle form.
• Trapped in the Past: The premise of Season 9 is that the heroes accidentally set off a time machine Doctor H. created when he was younger and are sent to the past.
• Treasure Map: In Season 7 episode 8, Big M. and Little M. are given a treasure map that leads to another treasure map that leads to weapons to destroy Planet Xing with, making it a "treasure map map".
• T. Rexpy: Nearly every dinosaur that lives on planet Xing Xing resembles a T-rex.
• Troperiffic: Happy Heroes has the benefit of being equal parts a sci-fi and comedy series, and thus employing a lot of tropes related to both genres. Besides that, though, it will throw tropes from other genres into the mix sometimes (such as the Supermen entering a fantasy world, complete with a wizard as an Arc Villain, in Season 8). Besides that, it will also get laughs out of viewers by spoofing or lampshading whatever it sees fit, with at least one episode going as far as to lampoon how simplistic the characters' lip movements are.
• Truncated Theme Tune: The season Funny Highlights cuts the theme song down to just 30 seconds.
• TV Head Robot: Headmaster Tele has a TV screen for a head.
• A Twinkle in the Sky: Several times. To give one example, in episode 12, Careless S. and Mr. Lightbulb are flung into the sky by a demolition robot. They disappear from sight with a twinkle.
• Twinkle Smile: In the Season 4 intro, Happy S. smiles and his teeth have a visible sparkle.
• Two Guys and a Girl: The spin-off season Happy Heroes Alliance and the City of Mystery features Careful S., Kalo, and their new friend Lisa as the main characters, with the first two being the guys and the third being the girl.
• Under the Sea: Season 16 takes place in the ocean, where the Supermen are sent to protect the mermaid princess Ling Er, who is involved in a prophecy about her turning into sea foam, causing the ocean and the planet to enter a crisis.
• The Un-Smile: Xiao’s attempts at forcing a smile are… unpleasant to look at.
• Useful Book: The school magazines in Season 7 episode 36 are used by students for basically everything besides actually reading them. Lightbulb Jr. uses them as fuel for a fire, another student creates a hula skirt out of the shredded pages, and Little M. thinks the pages make good toilet paper.
• Vague Age:
  • Everyone; although it was revealed in Season 8 that Big M. is forty years old. Also, Doctor H. is 29.
  • It is shown in a background that the Heroes are in 3rd grade, so they might be around 8 years old. Mentally, anyway, since they haven't been revived for that long.
• Versus Character Splash: One appears in Season 8 episode 33 when the Supermen are about to fight Huo Haha and his group of dark wizards in a civilized manner (read: pretend to use their violent attacks without inflicting actual pain on each other since it's Peace Day).
• Very False Advertising:
  • In episode 10, Doctor H. and the Supermen go to a four-star hotel after seeing an ad for it in a brochure. Turns out the Taj Mahal-looking hotel in the ad does exist, but it's teeny-tiny. They're actually staying in tents in the middle of nowhere, with the "four-star" part coming from a group of four stars in the night sky.
  • In episode 25, the Supermen are not pleased at Mr. Lightbulb when they find out that the Mr. Kiwi drink he's selling is not actually full of vitamin C as the advertising claims and that it's just colored sugar water.
• Villain Episode: Season 8 episode 18 is centered more on the villains than the heroes, with its plot being about Big M. training Little M., Huo Haha, and a few dark wizards to be more ruthless when he realizes they may not be evil enough.
• Villainous Crush: Sick Monster has a crush on Careful S., despite the two being a villain and a hero respectively. In Season 6 episode 3, Sick Monster is constantly holding a plush of Careful S., and at the end of the episode, Big M. holds the plush on a string to encourage her to ride a space bike back to Planet Guling.
• Vine Swing: In episode 14, Doctor H. swings on a vine in Mr. Lightbulb's garden, only to hit a wall.
• The Virus: Season 5 is about Big M. and Little M. exploiting a virus from Planet Gray that remains latent in an infectee until it's manually activated by a person. Once it's activated, an infected individual becomes mind-controlled into becoming a villain, working for Big M. and aiding in his effort to take over Planet Xing.
• Visible Invisibility: In Season 2 episode 15, whenever a character is using the invisibility cloak, most of the time they're still visible but transparent.
• Visible Sigh: It's fairly common for characters to produce a little cloud of breath when they sigh.
• Visual Pun: At the end of episode 16, Big M. and Little M. find themselves using a Trojan horse in Doctor H.'s internet router. The Trojan horse is literally a giant rocking horse.
• Vocal Evolution: In the first episode of the Lookus dub, Doctor H. has a higher-pitched voice than he does in the rest of the dub.
• Voiceover Letter: Whenever a character reads a note from another character, it's usually read in the voice of the character who wrote it.
• Voluntary Shapeshifting: Adelians, such as Kalo, have the ability to shapeshift into whatever they want to, though they can get locked in a form if they’re low on energy.
• Vomit Indiscretion Shot: It's common for characters to vomit without making any attempt to hide it, particularly when they look at Big M.'s ugly face.
• Walk on Water: In City of Mystery episode 2, Careful S. runs on the surface of the water as he, Kalo, and Lisa outrun a sea monster.
• "Wanted!" Poster: One episode of Season 11 features Starshadow and Moondance on wanted posters. Hilariously enough, the picture on Starshadow's poster is a selfie.
• Wasteful Wishing: In Season 2 episode 20, Big and Little M. waste the three wishes given to them by the bottle genie by wishing for a lot of money (so much that it crushes them), wishing for no money (which gives them poor clothes), and then wishing for themselves to go back to normal.
• Watch Out for That Tree!: In episode 14, Doctor H. accidentally hits a wall while doing a Vine Swing in Mr. Lightbulb's garden.
• Water-Geyser Volley: In Season 5 episode 21, Big M. ends up stuck in a room that floods over, creating a geyser of water with him on it. Him chained to a toilet becomes the inspiration for a statue.
• Water Guns and Balloons: One episode had the students of the school dunking it out in a water gun fight. You were "out" when the paper taped to your chest got soaked. ^note  and then it started raining...
• Water Wake Up: In Season 4 episode 29, Big M. falls unconscious after eating a cooked apple given to him by Sweet S., and Little M. wakes him up by pouring water on him.
• Wax On, Wax Off: Principal Television once trained the heroes for a basketball match by making them do the dishes. It worked.
• We Interrupt This Program: In episode 42, the Supermen and Doctor H. are watching a TV show and about to find out who the perpetrator of a crime is when Mr. Lightbulb interrupts it with a commercial for the carnival and its fruit juice rain (the episode mostly takes place at this carnival). The ad runs for long enough that we never see who the villain in the show is, which doesn't sit well with Sweet S. at all.
  Sweet S.: (banging on the TV) TELL ME, WHO WAS THE BAD GUY?! TELL ME!!!
• We Will Meet Again: The space pirate in episode 47 says "You haven't seen the last of me!" after initially fighting Happy S. He does indeed reappear later in the episode.
• Weakened by the Light: Inverted. In Season 4 episode 45, while fighting the shadows that have been brought to life by Big M., Sweet S. accidentally discovers that they dissolve once they're exposed to total darkness. She then gives Smart S. instructions to destroy a nearby electricity source to darken the city and defeat the remaining shadows.
• Weather-Control Machine: In episode 39, Doctor H. makes a machine that can change the weather. The machine is shown to be able to make snow and lightning bolts, among several other options that are never seen in action.
• Wedding Smashers: Subverted. The ceremony to establish diplomatic relations between Planet Xing and Dog Planet is made to play out like a wedding, and Big M. and Little M. have a robot monster try to assassinate Ambassador Wang to ruin the "wedding". The robot is mistaken for a superhero and gets caught up with the attention he's getting. But then Cat Planet's ambassador cuts the electricity to the building where the ceremony is taking place and kidnaps the Global Leader, thus ruining the whole event.
• Wham Episode: Season 7 episode 50 significantly shakes up the status quo by having Kalo die by sacrificing himself to defeat a spaceship army. Careful S. is not happy about this since Kalo was a close friend of his, and a few episodes of Season 8 use his refusal to get over it as a major plot point.
• Wheel o' Feet:
  • In episode 41, one shot of Happy S., Sweet S., and Doctor H. running depicts their legs as spinning swirl shapes.
  • In Season 10 episode 23, after Smart S. uses a Pokeball-like device to feed a monster Sweet S.'s food and defeat it, Sweet S. angrily chases after Smart S. over it, with both characters' feet depicted as swirling shapes as they do so.
• Whole Episode Flashback: Season 3 episode 20 is one, explaining why Doctor H. prefers to remain in his house and how Big M. got to be so ugly.
• Who's on First?: In Season 8 episode 1, when Big M. and Little M. meet Huo Haha for the first time.
  Big M.: (clears throat) Are you sent by the commander?
  Huo Haha: Yes. (does a pose with his toilet plunger) Hi. I am the magician who attacked the president, Huo Haha!
  (Big M. hits Huo Haha, resulting in a Hit Flash followed by Huo developing a Cranial Eruption.)
  Big M.: Enough! Do you think I was joking? Be serious!
  Huo Haha: But I didn't laugh. My name is Huo Haha.
• Win to Exit: In Season 10 episode 23, the Supermen are trapped in a video game by Big M. and are informed by a sign that they have to beat the game to escape.
• Wingding Eyes: It's common for characters' eyes to become certain symbols in a given situation, such as spiral eyes when they are dazed or heart-shaped eyes when they fall in love (the latter is especially true for Doctor H. when he's around Miss Peach).
• Wire Dilemma: In Season 2 episode 6, Careless S. has to disarm a bomb on the school bus by cutting one of its two wires, a red one and a blue one. He eventually decides to pull both wires out, causing it to explode anyway, though Happy S. does get the bomb out of the bus in time.
• Wish Upon a Shooting Star: In episode 6, Smart S. makes a wish during a meteor shower with Careless S. and gets a surprise when he gets... well, not what he wished for. He wishes to always stay as handsome as he is and gets hit by a meteor.
  Smart S.: I wish to always stay as handsome as I am right now until the end of time.
  Careless S.: Huh. Those stars must be really generous to do that. Hey, take a look. They're making your wishes come true already.
  Smart S.: Of course they are. [looks into his mirror] Because I'm as handsome as ever!
  Careless S.: Oh, that's not it. I was referring to the part about the end of time.
  Smart S.: Huh? Ahh?! There's a meteor!
  [A Flaming Meteor falls on them.]
• Wishing Well: In Season 8 episode 36, Big M. runs into a lake serving as a wishing well when he's chasing a coin he lost. The coin falls into the lake, and Big M. makes a wish that he can find all the elemental staffs. He ends up falling into the lake himself and gets taken to the studio that produces the show.
• Wizard Beard: Xiao Haha has a long, white-colored beard and not only uses magic like your average wizard, but he's also written an entire book about it.
• Wizards from Outer Space: Season 8 mixes fantasy elements in with the show's usual sci-fi theme. The Supermen, a group of Ridiculously Human Robots from Planet Xing, go into the book A History of Magic where such fantasy mainstays as wizards, dragons, and gnomes can be found.
• Wolf Whistle: Referenced in Season 6 episode 21, when Big M. lets out a whistle to alert his monster to come out and attack the Supermen. Unfortunately, his whistle happens to be timed right when a woman is passing by him, and she mistakes it for him being attracted to her and slaps him.
• Wolverine Claws: One of the recurring monsters has retractable claws that they use in combat.
• Wolves Always Howl at the Moon: In Season 4 episode 30, Little M., who is dressed as a wolf, howls at the moon.
• World Shapes: Suspicious Planet, which plays a major role in Season 7's "God of War Legend" arc, is shaped like a heart.
• Worst News Judgment Ever: In episode 14, the news gives a lot of attention to a musician missing a note.
• Worthless Treasure Twist: In Season 7 episode 8, Big M. and Little M. go out to find a special weapon using a Treasure Map. When they finally do find it, they discover it's just a spoon.
• Would Hurt a Child: Huo Haha attempts to hit a little girl who wants him to get her kite off of a roof in Season 8 episode 18. The girl grabs his toilet plunger wand right before he can actually hit her with it and uses it to get the kite down.
• Would Rather Suffer: In episode 31, the "romantic date with Miss Peach" scenario the Supermen go through in Doctor H.'s virtual reality dream goggles proves too disappointing for them, and once they wake up they tell the Doctor they never want to dream again. When the Doc tries to draw their attention to another scenario he made that he thinks they might enjoy, the Supermen stick to their word, with Smart S. commenting he'd rather die than have another dream.
• The X of Y: Quite a few of the official English episode titles follow this naming convention.
  • Season 1 episode 46, "A Tale of Food Revenge".
  • Season 2 episodes 1 and 2 (Multi-Part Episode), "The Trail of Careful S."
  • Season 2 episode 8, "The Crisis of Being Late".
  • Season 2 episode 12, "Loss of Gravity".
  • Season 2 episode 23, "Hearts of Gold".
  • Season 2 episode 30, "The Escape of Boss Lightbulb".
  • Season 2 episode 38, "The World of Careless S."
  • Season 2 episode 49, "The Secret of the TV Station Boss".
  • Season 2 episode 52, "Race of Champions".
  • Season 7 episode 9, "The Arrival of the Royal Cat Guard".
  • Season 7 episode 26, "A Change of Heart".
  • Season 8 episode 2, "Magical Fellow, Part 2: Token of the Old Grand Master".
  • Season 8 episode 30, "The Secret of Gnomes".
  • Season 8 episodes 39 and 40 (another multi-part episode), "The Ancestor of Magic".
• X-Ray Sparks: Often, whenever a character gets electrocuted, their skeleton will become visible for a second.
• You Answered Your Own Question: In Season 2 episode 44, Little M. asks Big M. what the number for 110 is. (110 being the emergency number for the police in China; the English dub changes it to 911.)
• You Are Fat: In Season 7 episode 15, Fat Tiger looks for new Cat Planet recruits and rejects a cat suspiciously resembling Garfield simply because he's too fat.
• You Are Number 6: One character from later on in the show is named "玖", which is a more formal way to write the Chinese character for the number nine.
• You Can See That, Right?: In episode 46, the heroes inexplicably start to see random vegetables and other foods appearing in their home in odd locations (such as a carrot appearing next to Smart S. in his mirror but not anywhere else). A few of the heroes ask the others if they saw anything too.
• You Can't Go Home Again: Big M. and Little M. crash-land themselves on Planet Xing Xing and can't return home to Planet Gray.
• You Fool!: Said by Big M. to Little M. in Season 8 episode 3 when the latter gives him suggestions for intimidating villain characters in the book "A History of Magic" for Huo Haha to transform into:
  Little M.: (looks at the scroll of characters) This one looks terrible. (shows a picture of one of the characters) The Killer King.
  Big M.: (looks over at Huo Haha, then back at the scroll) Is there anyone who looks more frightening than that? One that even the Killer King is afraid of?
  Little M.: Yes, this one. (shows another picture from the scroll) King of the Killer King!
  Big M.: Is there anyone more frightening? One that even the King of Killer King is afraid of?
  Little M.: Yes. (shows yet another picture from the scroll) King of the Killer King's Wife!
  (Big M. punches Little M., resulting in a Hit Flash.)
  Big M.: YOU FOOL! That's not what I was talking about!
• You Have to Burn the Web: In Season 6 episode 17, a lightning storm starts on Planet Guling, and the lightning bolts cause the webs used by the inhabitants for their primitive version of the internet to burn, creating a massive wildfire.
• You Need a Breath Mint: In Season 8 episode 6, Huo Haha has a rancid smell coming out of his mouth and he apologizes to Big M. since he ate garlic earlier. Later in the same episode, Smart S. notices the smell, and Huo Haha apologizes again, realizing too late that he also forgot to brush his teeth. This second instance distracts Huo for long enough to give Careful S. a chance to grab the fire wand from him.
  Smart S.: Who ate a lot of garlic?!
• Your Costume Needs Work: In Season 3 episode 4, to make a lie he told about the existence of a people on Planet Xing called the Blue Stars convincing, Smart S. hires someone to paint actors the necessary colors. That person mistakes the Monster of the Week for one of the actors and complains about the low quality of his costume before the monster yells at him that it's not a costume.
• Your Television Hates You: Overlaps with Cold Turkeys Are Everywhere. In episode 46, Big M. and Little M. try to get their minds off of their lack of food by watching TV, but every program they see is related to food in some way.

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