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The poster for the first movie.note 

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》
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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).

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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.

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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. 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.


"Troper S. transform!":

    open/close all folders 
    A-C 
  • 1 Million B.C.: 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).
  • 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.
  • 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.
  • Absentee Actor: Not every episode features all five heroes; for example, Season 2 episode 37 features appearances from Careless S. and Smart S., but none of the others.
  • 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.
  • 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 Blood: Shapeshifter's blood is green, while Kalo's blood is blue.
  • 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.
  • Aliens and Monsters: Aliens aren't anything special in this universe, but a cry of "monster" will automatically prompt a Hero to attack. It's never really been cleared up what the exact definition of a monster is, however...
  • Aliens Speaking Chinese: The inhabitants of planet Xing Xing all speak Chinese perfectly fine.
  • All Just a Dream: Near the end of Season 8 episode 34, Happy S. wakes up and realizes the events of the episode were all just 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".
  • 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.
  • 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).
  • Animation Bump: The theatrical films have noticeably amped-up animation and shading compared to the TV show.
  • Anti-Climax: 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.
  • 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.
  • 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.
  • 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.
  • Autocannibalism: 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.
  • 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.
  • 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 8 episode 6, Big M. suggests that he and Little M. kidnap the King by placing him a bag.
  • 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 M. 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!
  • Baleful Polymorph: 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.
  • 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.
  • 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.
  • 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.
  • Berserk Button: Don't insult Miss Peach in front of Doctor H. Don't make fun of Sweet S., especially her cooking. Don't suggest in any way to Smart S. that Careful S. is better than him. Don't threaten or hurt Happy S.'s or Oversensitive S.'s friends. Never insult Kalo's planet.
  • 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.
    • The second theatrical film starts out as one, with the characters running in a Superman race.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 Compulsive 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.
  • Catchphrase: A whole bunch.
    • Big M.: "Darn it, we failed again!" after every time their plan fails... which is literally every episode.
      • Lamp-shaded by Little M. several times throughout.
      • One episode even focused specifically on that one catchphrase.
      • Ironically, few characters know that that is his catchphrase, since they don't know that he's working to conquer the planet.
    • Doctor H.: "Miss Peach, let me save you!!"
    • Happy S.: "Happy S. is here!"
    • Sweet S.: "Who wants to try my cooking?"
    • Smart S.'s referring to himself as "the main character", "the lead", "the star", or "super cool". He also tends to say "According to my analysis..."
    • Careless S.: "I forgot."
    • Oversensitive S.: "Caution lets your ship float for a thousand years."
    • Sad S.: "I'm really sad..."
    • Sick S.: "How disgusting."
  • 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. and Sweet S. help to save a cat which is falling from a tree it climbed.
  • 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.
  • Cephalothorax: The Supermen of Planet Qiyuan from the second film have cube-shaped bodies with arms and legs.
  • Celebrity Paradox: In the first episode of Season 7, Mr. Lightbulb advertises and tries to sell DVDs of Season 6 of Happy Heroes. Within the show itself.
  • Chain of People: Careful S. pulls this off by himself once to avoid falling into lava.
  • Character in the Logo: Happy S. is in the logo.
  • 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.
  • 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.
  • Clip Show:
    • There's a season called Funny Highlights which is clips from earlier episodes.
    • Season 2 episode 26 has the heroes mention their greatest accomplishments during an interview. The accomplishments are shown as clips from previous episodes.
  • 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.
  • 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.
  • 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: Arguable semi-example. Pleasant Goat and Big Big Wolf is referenced in a few episodes (e.g. in one episode, Happy S. manages to launch a monster into an environment where Pleasant Goat's Wolf Castle is nearby). Pleasant Goat and Happy Heroes are made by different companies, but both companies are subsidiaries of Alpha Group Co., Ltd., so it might count.
  • Confused Question Mark: Occasionally, characters might have a question mark pop up next to them when they are puzzled about something.
  • Conspicuous CG: There are quite a few objects or sequences that are animated in CGI as opposed to the usual 2D animation.
  • Continuity Nod: In Season 2 episode 20, when Big M. summons the bottle genie, he comments that he may be similar to the wishing wood, referring to the events of Season 1 episode 35 where the heroes find a piece of wood that grants wishes.
  • 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.
  • 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.
  • 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.
  • Crush Blush: Doctor H. often blushes whenever he sees Miss Peach.
  • 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.
  • 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: 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 overlapped with Fire-Forged Friends.
  • 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.
  • Disappeared Dad: When Doctor H. was a little kid, his father got kidnapped by aliens.
  • Disembodied Eyebrows: The King from Season 8 has eyebrows that can be seen in front of his crown.
  • Disguised in Drag:
    • Happy S. does this once.
    • 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.
    • 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.
  • 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...
  • 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 Drop: In the second film, when Little M. sees Big M. has been dragged into the same Planet Qiyuan prison cell he's in, he's so surprised that he drops a mug in his hands, and it shatters on the floor.
  • 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.
  • 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.
  • Driven to Suicide: In episode 15, Big M. fakes wanting to shoot himself over "his" lost cat, in an attempt to get the stray cat from Smart S.
  • 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.
  • Dying Moment of Awesome: Complete with giant explosion obliterating the entire opposing army.
  • 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.
  • 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 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.
  • Either/Or Title: The official DVD and VCD covers for Season 1 and Season 2note 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:
  • 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.
  • 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 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.
  • 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.
  • Everything's Better with Cows: Anthropomorphic cows are often seen on Planet Xing Xing.
  • Everything's Better with Dinosaurs: Dinosaurs are among planet Xing Xing's wildlife.
  • Everything's Better with Penguins: Season 2 episode 40 introduces a penguin from planet Gray's monster academy named P-p-p-p-penguin M-m-monster (that stutter is literally part of the name, by the way).
  • 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: 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.
  • Expy: Little Cutie, the cleaning robot Doctor H. invents in episode 30, cleans trash by compacting it into trash cubes, which brings WALL•E to mind.
  • Extendable Arms: In episode 47, a robot woman extends her arm to grab her kid's toy spaceship.
  • Eye Pop: In Season 2 episode 41, Big M.'s eyes pop when he realizes Happy S. walked past his trap.
  • Eyelid Pull 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 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.
  • 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.
  • 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.
  • 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.
  • Five-Man Band:
    • The Leader: Happy S. is the team's leader.
    • The Lancer: Smart S. is more vain compared to the likes of Happy S., making him a fair-enough foil to said hero.
    • The Smart Guy: Careless S., though very forgetful, is smart enough to work as an effective weapons authority for the other heroes.
    • The Big Guy: Careful S., while not actually bigger than the other heroes, still qualifies for being very skilled in physical combat.
    • The Chick: Sweet S. is The Heart of the group, and also the only female out of the heroes.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 after he forgets to repair their ship.
  • 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.
  • Genie in a Bottle: Referenced in Season 2 episode 20 with a genie who is literally a bottle.
  • 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.
  • 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.
  • 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.
  • 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. Smart S. withdraws the money anyway.
  • Goofy Print Underwear: Big M. is shown on a few occasions to be wearing underwear with a heart pattern on it.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • Idiosyncratic Wipes: The show often uses a transition of Doctor H. fixing a device.
  • 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 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.
  • 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.
    • Trying to distinguish the two Doctor H.s in the first movie, they pose to them the challenge of fixing a large, complex spaceship. (It was also a convenient way to get that spaceship fixed, since they didn't have the funds to do so otherwise.)
  • Improbable Hairstyle: 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.
  • 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.
  • 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.
  • 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.
  • 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 one in Season 2 episode 10 when he holds a court trial concerning Big M. and Little M. being spies.
  • Just a Machine: One character thinks this of themselves after finding out that they're a robot.
  • 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.
  • Last Episode, New Character: In the last episode of Season 1, Careful S. is officially introduced to the superheroes.
  • 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.
  • Life Meter: In the second film, the participants in the Superman race are all given HP meters and are out if their gauge is lowered completely.
  • 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 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.
  • Loads and Loads of Characters: Being a series of over 10 seasons, there have been quite a few characters who have appeared in the show, including both the main characters (whether they're in only one season or a series-wide appearance) and the various one-offs who only appear in one or two episodes.
  • 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.
  • 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.
  • 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.
  • 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 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.
  • 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".
  • 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.
  • 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".
  • 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).
  • 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".
  • Mental Picture Projector: The heroes have memory projectors built into them, allowing them to show their memories to others.
  • 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.
  • Mini-Mecha: The Car Knights; sometimes they appear to be pretty big, however.
  • 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.
  • 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.
  • 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.
  • The Movie: There are two so far. The first, simply titled Happy Heroes: The Movie, was released in 2013. The second, Happy Heroes: The Battle of Planet Qiyuan, was released in 2014.
  • Mr. Seahorse: An episode of Season 6 has Big M., a male, develop a bump in his tummy and think he's pregnant. When he does give birth, he realizes he didn't actually give birth at all and it was just him farting.
  • 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.
  • Multicolored Hair: The character Nine has hair that's entirely white on one half of her head and entirely black on the other.
  • Multilingual Song: The otherwise all-Chinese song "Evil Eyes", from the second film, contains the English verse "Life is rough, so you gotta be tough/Life is wonderful, so you gotta be cool".
  • 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.
  • My Greatest Failure: An important part of Doctor H.'s back-story is revealed in the first movie. He swore to never touch a spaceship again....
  • My Greatest Second Chance: ...and he overcomes his doubt to fix the spaceship to help people get to safety.

    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.
  • Neck Lift: In Season 7 episode 50, Caesar holds Kalo by the neck during their battle, choking him. Careful S. saves Kalo from it.
  • Never Smile at a Crocodile: In Season 3 episode 33, Smart S. finds himself in a pit of crocodiles, who try to attack him.
  • 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.
  • 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-Indicative Name: Lampshaded by the heroes in episode 13, upon discovering that Green Town isn't very green at all.
  • 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:
    • The second movie features a band named "Aprilday", a reference to the Taiwanese band Mayday.
    • 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 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.
  • 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.
  • 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 holding back tears.
  • 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. Sad S. utilizes this as one of her attacks.
  • Off-Model: In an episode of Season 3, a poster of Miss Peach appears in the background a few times that completely lacks her facial features.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • Pinch Me: 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.
  • 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.
  • 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.
  • 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.
  • 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: In episode 42, Big M. accidentally consumes an orange he laced with diarrhea powder and desperately has to use the bathroom, but a long line of people prevents him from doing so.
  • Power Copying: Shapeshifter, from the 1st movie, after downloading the information from a computer.
  • 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.
  • 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 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: Season 2 episode 6 gives the bus driver's name as Avery One for the sake of a quick joke where the heroes think Headmaster Tele is saying "everyone" instead.
  • 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.
  • 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-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.
  • 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.
  • Red/Green Contrast: Main character Happy S. is mostly red in color while the main villain Big M. wears a suit of green armor.
  • 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.
  • 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.
  • 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.
  • Robotic Reveal: At one point in Season 6, it's revealed that Buding, the Village Mayor's daughter, is actually a robot.
  • 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.
  • Roll Out the Red Carpet: 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...
  • 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.
  • 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.
  • 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.
  • Send in the Clones: 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.
  • Shape Shifter 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.
  • She Is Not My Girlfriend: In episode 9, a female fan notices Sweet S. with Smart S. and thinks she's his girlfriend, running off in heartbroken tears. Then Careless S. appears, and a male fan 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.
  • Ship Tease: Kalo hugging Careful S.
    • Some of the interactions between Smart S. and Careful S. count as this.
    • Smart S. and Careless S. watching the stars together, and their other bonding moments.
    • Careful S., after rescuing Sweet S., and blushing as she thanks him.
    • Sweet S. supporting the injured Smart S. as they walk off into the sunset.
    • And the episode involving Sad S. and Careful S. in Season 6.
    • Careless S. giving the solar-cooking pan to Sweet S. and then later rescuing her, in the 1st movie.
    • Doctor H. and Miss Peach (finally) going on a date at the end of the 1st movie.
    • Happy S. and Zelia in the 2nd movie.
  • 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.
  • 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 
    • 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.
  • 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!"
  • 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  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.
  • The Smurfette Principle: Sweet S. is the only female of the main heroes.
  • Sneeze of Doom: 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.
  • 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.
  • 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".
  • 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.
  • 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 one episode of Season 7, 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.
  • 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.
  • 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.
  • 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.
  • Supernatural Is Purple:
    • The circus magician in Season 3 episode 33 has purple eyes when he's under Big M.'s control.
    • The wizard Huo Haha dons a purple outfit. In Season 8 episode 1, he also has purple eyes when he's transformed into a robot guard, whereas the robots of Planet Xing ordinarily have yellow-green eyes.
  • 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.
  • Synchronized Swarming: In the second film, Big M. is chased by a bunch of bugs that are flying at him in the shape of a syringe and are sucking at his HP meter. Happy S. punches the bugs away.
  • 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.
    • 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.
  • 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!
  • 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.
  • 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.
  • 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 Syncing Feeling: One scene in the second film has Happy S., Zelia, and Big M. pretending to be the band Aprilday. Big M. breaks out into a rather impressive singing voice for their concert... but then the battery on his phone goes dead, and the audience gets mad at them as they realize he was lip-syncing the music he had playing on that phone.
  • 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 "The" Title: Two of the official English episode titles follow this naming convention:
    • Season 8 episode 3, "The Transformer".
    • Season 8 episode 29, "The Pretender".
  • Theme Tune Cameo:
    • 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).
  • 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 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.
  • Title: The Adaptation: The 1st movie's official title is roughly "Happy Heroes: The Movie", though many times "The Movie" will be dropped.
  • 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: 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.
  • 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 
  • 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.
  • 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".
  • 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 males and the third being the female.
  • Tyop on the Cover: The title of Season 5 episode 22 is "炸弹在身边" ("A Bomb is Around"), but the title of its official YouTube upload misspells it as "炸蛋在身边" (turning it into "A Fried Egg is Around"). The incorrect Chinese character, "蛋" ("dan"), has the same pronunciation as the Chinese character "弹" that should go in its place.
  • Tyrannosaurus rex: Nearly every dinosaur that lives on planet Xing Xing resembles a T-rex.
  • 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).
  • 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 Rescue: In the second film, Big M. puts aside his hatred of the Supermen for once to save them from having their energy drained. He destroys the energy-draining machine by having Little M. (in Lighting S.'s costume) zap him with his lightning, since the lightning always hits Big M. every time he uses it.
  • Vine Swing: In episode 14, Doctor H. swings on a vine in Mr. Lightbulb's garden, only to hit a wall.
  • 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.
  • Vomit Indiscretion Shot: It's common for characters to vomit without making any attempt to hide it.
  • "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 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 
  • Water Wake Up: In Season 4 episode 29, Big M. falls unconcious 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.
  • 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.
  • 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.
  • 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.
  • Would Hit a Girl: Huo Haha, as is demonstrated in Season 8 episode 18 where he tries to hit a little girl who is asking him to get her kite from on the top of a roof.
  • 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: There's an episode where Little M. asks what the number for 911 is.
  • 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 Gotta Have Blue Hair: Cockroach, a girl from planet Gray who first appears in episode 29, has light blue hair.
  • You Make Me Sic: 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.
  • 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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