As the show spans 10+ seasons and three movies, it is not surprising that it has a lot of characters... This section is continually under editing, so please beware of unmarked spoilers and feel free to add in tropes or character descriptions to new characters.
Heroes and Allies
As a WholeThe five main heroes.
- Kid Hero: One episode reveals them to be in 3rd grade, making them around eight years old, at least mentally.
- Robot Kid: All five of them are clearly meant to be kids, what with the fact that they mostly have higher-pitched, childlike voices and are shown to be in 3rd grade in one episode.
Happy Superhero (Happy S./Hero Kai)
The frontman of the group. Happy S. is brave and impulsive, often being the first to act when there are monsters. Has the superpowers of flying as well as super-strength, and therefore the ability to perform the Happy Knight Punch and similar moves. His choice of weapon is a boomerang that's equipped to his helmet.
- Cute Bruiser: He's an adorable little robot boy... who can and will beat Big M.'s monsters up like nobody's business.
- Battle Boomerang: The little wings on the sides of Happy S.'s helmet can come off and form a boomerang which he sometimes uses when fighting monsters.
- Brought Down to Normal: In one episode he loses his superpowers.
- Brought Down to Badass: He still defeats the villain though.
- Chest Insignia: A heart.
- Flying Brick: Has Super Strength and the ability to fly.
- Hot-Blooded: Gives a lot of passion to things he does. Once he demolished a skyscraper just to save a kitten.
- Power Fist: His signature attack is the Happy S. Punch.
- Red/Green Contrast: Happy S.'s heroic shade of red contrasts with Big M.'s villainous green armor.
- Red Is Heroic: He is the leader of the heroes and is mostly red in color.
- Sweet Tooth: Loves chocolate and other sweet treats.
Sweet Superhero (Sweet S./Hero Tian)The only girl in the team, she is quite smart. Sweet S. can create pink bubbles of any size and resilience (although that will cost her energy) which could float and carry others, and in monster attacks act as shields or super-powered attacks. Starting in Season 9, she can manipulate a Bubble-Man from her bubbles. She also possess the superpower to heal, as seen in Season 11.
- Barrier Warrior: She often uses her bubble attack to create a shield and block herself and others from incoming attacks.
- Chest Insignia: A pink-red first aid cross, symbolizes her healing abilities and protective personality.
- The Heart: Sweet S. literally embodies kindness.
- Heart Is an Awesome Power: Her main superpower is to create bubbles... which are surprisingly effective as shields, a mode of transportation, etc.
- Lethal Chef: Sweet S. is a notoriously bad cook, so much so that the other Supermen do everything in their power to avoid eating whatever she cooks whenever she's the one making food for them.
- The Smurfette Principle: She's the only female out of the Supermen.
- Team Chef: Sweet S. makes a lot of food for the other Supermen... unfortunately for them, since her food is absolutely awful.
- Weak but Skilled: Physically speaking, Sweet S. is exhibited to be much weaker than the other superheroes. However, her intelligence and superpower prevails in fighting monsters.
- Women Are Wiser: In one episode she had to prove to Smart S. that females were as smart as males.
- You Gotta Have Blue Hair: She has two little ponytails of green hair on the back of her head.
Smart Superhero (Smart S./Hero Hua)He thinks he is the star of the show, and is very vain. His main ability involves manipulating magnetic fields, therefore giving him the power to create strong magnet links as well as magnetically charged drills. In Season 9, he can attract metals to create armour and limb enhancers, providing him more strength. However, this ability is yet to be showcased in later seasons.
- Ambiguously Brown: He's the only hero out of the team with noticeably brown-colored skin.
- Elemental Hair: Has striking, spiky blonde hair, much like his magnetic powers.
- Lost in Translation: The name "Smart S.", from the Lookus dub, does not fit the character's Narcissist personality. His original Chinese name seems to be a magnetism/romantic attraction pun more properly corresponding to that trait, which seems to have gotten muddled up during translation. The Miao Mi dub names him "Romeo", which fits the characteristic better due to its romantic connotations (the idea being he's hopelessly in love with himself).
- Narcissist: He tends to refer to himself as stuff like the "main character", and loves to mention how handsome he is.
- Magnetism Manipulation: Smart S.'s primary superpower is to attract objects with his Smart S. Magnet.
- Shock and Awe: Electricity is among his powers.
- Sudden Name Change: From Smart S. to Romeo????
Careless Superhero (Careless S./Hero Chu)The team's local weapon (mostly guns and anything that explodes) specialist. Does not possess any superpowers except for his prodigy in strategic thinking and enhanced knowledge in weaponry. This makes Careless S. an asset in battle, as he can be very analytical as well as delivering a powerful move via his mobile supply of weapons. However, he can be very forgetful.
- Adorkable: His tendency to forget things, and has cute little freckles.
- Crouching Moron, Hidden Badass: He's very forgetful, but he's surprisingly good with weapons for someone with such a trait.
- Genius Sweet Tooth: He is usually seen with a lollipop.
- All There in the Manual: According to a picture launched by the creators, the lollipops he eats are very strangely flavored.
- Simpleton Voice: The Lookus English dub gives Careless S. a much deeper, stupider-sounding voice to accentuate his forgetfulness.
Careful Superhero (Careful S./Hero Xiao)The last superhero who joins the team, Careful S. may look cold and aloof, but he is actually one of the nicest guys you would ever meet. Has the superpower of creating duplicates of himself, teleportation on high ground, invisibility, and energy manipulation (can concentrate energy to form a laser beam, in a punch or kick during combat, or for energy transfer, healing or in attack form). Very skilled in close-combat, particularly in martial arts and sword-fighting.
- Chest Insignia: Planet Gray's symbol to represent how he was continuously used by evil from Season 1 to 9. Adopted Kalo's triangle starting from Season 10 likely to reminisce their companionship as 侠义双雄 (the Gallant duo).
- Cute Little Fangs: The fact that he looks like a cat doesn't help at all with his allergy.
- Determinator: Careful S. stands for determination and willpower. This is displayed in all seasons, but especially in Seasons 3, 7, 10, and 11.
- Flash Step: He often gets around by using something like this, where he teleports short distances between given points.
- Heroic Ambidexterity: Usually wields two swords (morphed by Kalo) in combat. Can engage with two or more different targets in battle (with or without duplicates), proving to be a prowess in battle. see Season 11.
- Purple Is the New Black: Later seasons change the color of his suit from black to purple.
- Rubik's Cube International Genius Symbol: He is exhibited to be very intelligent, and he is constantly seen with a rubik's cube.
- The Quiet One: He doesn't talk as much as the other heroes.
KaloBest friend of Careful S. and companion in battle. and the other four superheroes of Planet Xing. Originally from Planet Adeli before its destruction. Can turn his own bodyparts into inanimate objects as well as controlling electronic objects. His body is composed entirely out of energy, as signified by the flames. Therefore, as we learn in Season 7, when he uses more energy, he is literally burning his lifeline.
- Bash Brothers: with Careful S.
- Big Brother Mentor: Primarily to Careful S, but also to the rest of the alliance. His mature and knowledgeable side is specifically displayed in early episodes of season 11 through the advice he gives.
- Which is somewhat logical for the producers to assign him the Mentor Occupational Hazard.
- Chest Insignia: An inverted triangle (Nabla) just below his chest. Careful S. later adopts the triangle into his own symbol in Season 10, possibly to solidify and bear in mind Kalo's sacrifice and legacy .
- Cool Shades: He is often seen wearing a pair of black shades.
- Flaming Hair: Sort of. Kalo has blue energy flames on the top of his head where hair would normally be.
- 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. Zooming out of the frame, Kalo is seen transforming his hand into a blade to cut a watermelon. Headmaster Tele, true to his word, then literally confiscates Kalo (along with his watermelon). He's also shown to be fond of watermelons on an illustration made for his birthday.
- Heavenly Blue: Related to his title of "Zhan Shen" (God of War) to Adelians.
- Not Afraid to Die: In fact, he does this for the greater good of planet Xing Xing in Season 7 - he kills himself to drive away an army of enemy spaceships.
- Older than They Look: Kalo is confirmed by the creators to be around 30 (see also Season 9). The animation style, however, does not particularly reflect that in a visual aspect.
- Put on a Bus: Since his ultimate death in season 7, and until his revival in Season 10, he only appears once physically in Season 9, Episode 13, when his 25-year-younger-self is scouting a crime scene with Careful S. (Sadly, Careful S. does not recognize him, since he has a human disguise on.)
- Technicolor Fire: His fire "hair" is blue.
- You Gotta Have Blue Hair: Technically he has energy flames for "hair," but it can be considered as hair.
The nonbiological father of the five superheroes of Planet Xing, and a mechanic who prefers to stay inside his house.
The H. stands for House, if you were wondering.
He is present in Season 9, but as a 25-year-younger-self, who just lost his father; known as Little H.
- Berserk Button: Heaven help you if you make fun of Miss Peach in front of him, since he has a crush on her.
- Celeb Crush: Has a crush on planet Xing Xing's celebrity news reporter, Miss Peach.
- Child Prodigy: He's been inventing stuff since he was a child. In particular, Season 9 shows that when he was young, he built a working Time Machine out of cardboard in an attempt to save his dad from being abducted by aliens.
- Fingerless Hands: He has the "mitten hands" variety in the first two episodes before they're changed to the standard Four-Fingered Hands.
- Parental Substitute: Doctor H. acts as a sort of father to the Supermen, taking care of them to make sure they're functioning properly. Happy S. even calls him "daddy" when he first interacts with him in the second episode.
- Teen Genius: His childhood ability to invent stuff stuck with him even after he grew up, including during his teen years.
Miss PeachPlanet Xing Xing's local news reporter, who has also been shown in a few other TV roles every now and then. Doctor H. has a huge crush on her. Appears in Season 9 as her 25-year-younger-self; known as Peach.
- Dub Name Change: From "Taozi Jiejie" ("Peach Sister") to "Peach I." and then "Miss Peach" for the Lookus dub.
- Sudden Name Change: In the Lookus dub, she refers to herself as "Peach I." for the first two episodes. All subsequent episodes of the dub have her being referred to as "Miss Peach".
Mr. LightbulbThe headmaster of planet Xing Xing's television studio. Appears in Season 9 as his 25-year-younger-self; known as Lightbulb.
- Mr. Vice Guy: He is greedy, but any episode showcasing this characteristic will always show him redeeming himself in some way.
- Species Surname: A lightbulb named Mr. Lightbulb.
Headmaster TeleHe was once a superhero before his retirement. Possess many superpowers, notably the ability to create powerful tornadoes.
- Brought to You by the Letter "S": Wore a costume with a big "T" on the front when he was a superhero.
- TV Head Robot: His head is a television screen displaying his facial features.
Professor Shitong Bai
Professor LimenAppears in Season 9 as his 25-year-younger-self; still known as a teacher, but he is the teacher of preschool/daycare that Little H. goes to.
Lightbulb Jr.Mr. Lightbulb's son; he goes to the same school as the Heroes.
Tropes shared by both characters:
- Big Eater: The two rarely get to eat anything, so whenever they do find food, they usually scarf it down pretty quickly.
- Big Guy, Little Guy: Big M. is the big guy and Little M. is the little guy.
Big M.The first major antagonist of the show. He makes all of the attempts he can to get back to his home planet, Planet Gray, but he inevitably fails. He also tries to take over planet Xing Xing often. In Season 9: his teenage-self.
- Domino Mask: Big M. wears a mask of this kind.
- Early Installment Character-Design Difference: In the first two episodes, he has two spiky shoulder pads on his green suit of armor that disappear starting from the third episode. The Planet Gray symbols on his headband and belt also do not have antennae in the first two episodes.
- Evil Is Hammy: He has a more exaggerated, hammy voice in the Lookus English dub.
- Expressive Accessory: The Planet Gray insignias on his headband and belt have faces that often make different facial expressions depending on what face Big M. is making.
- Green and Mean: He's the primary antagonist of the show and wears a suit of green armor.
- I Was Quite a Looker: As shown in Season 9, he was once a dashing young fellow with an IQ of over 200. Then he got hit in-between two elevator doors. Repeatedly.
- 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.
- Red/Green Contrast: Big M. is a villain in green armor, contrasting with Happy S.'s heroic red color scheme.
- Spikes of Villainy: In the first two episodes, anyway, where he has two spiky shoulder pads on his green suit of armor. These shoulder pads disappear starting with episode 3.
- Superheroes Wear Capes: Inverted. Big M., a villain, wears a cape, a feature that the Supermen don't have.
Little M.Big M.'s assistant, who helps him in his attempts to get back home or take over planet Xing Xing.
- Plucky Comic Relief: He provides most of the comedy in any scene featuring him and Big M.
The CommanderThe commander of Planet Gray's military. His face is never shown on camera; he usually has his back to the audience or has his face covered.
- The Faceless: His face is completely obscured from view whenever he appears.
- Good Smoking, Evil Smoking: He's one of the villains from Planet Gray and is always seen holding a cigarette in his hand.
Daoliu DunA military leader of Planet Daoba; he tried multiple times to conquer Planet Xing.
CaesarAn Adelian who played a part in the destruction of his home planet. Helped Daoliu Dun attack Planet Xing, and played a role in Kalo's ultimate death in Season 7.
ShapeshifterThe monster from the 1st Movie; it was shown that he wanted to be an inventor.
A magician who worked for Planet Gray; he owned a book written by his ancestor Haha Xiao, which was about the old days when magic was still prevalent, and competed with the heroes in finding the four magical staffs: Fire, Wind, Electricity, and Ice.
- Affably Evil: He works for the villains Big M. and Little M., but has a heart of gold and genuinely cares for others.
- Alliterative Name: His name repeats the letter "H".
- Perma-Stubble: Haha Huo has a noticeable stubble on his chin.
- Supernatural Is Purple: He is a wizard who uses magical powers and wears purple clothes.
Yuewu (direct translation: Moondance)
Xingying (direct translation: Shadowstar)
Zelia (Zhanglang: Cockroach)A minor character in the series. Zelia appeared only in a few episodes: she was introduced in Season 1, appeared in some episodes in Seasons 3 & 4, and one in Season 5. She does not appear in any other future episodes, but she does appear in the 2nd movie.
- His Name Really Is "Barkeep": In her debut episode, she calls herself "Cockroach" because she doesn't remember her real name. At the end of the episode, Doctor H. finds a document from her spaceship revealing that "Cockroach" is her real name.
- You Gotta Have Blue Hair: Has light blue hair.
Arcas (Akasi)He is Kalo's Adeli army friend, and was introduced in Season 3, with two episodes. He appears a few more times after: two episodes, in Season 6, and in the Season 7 arch when Kalo dies. Seen again in a memory of Kalo recounting his encounter with Thunder M.
SPOILER ALERT!!! There are spoilers in the next few folders. DO NOT open them unless you have watched past Season 5.
The Village MayorThe mayor of the village that the Heroes stay in.
BudingThe Village Mayor's daughter. It was found out in the Season 6 arch that she was actually a robot.
QiuqiuBuding's pet dinosaur
Oversensitive Superhero (Oversensitive S./Suspicious S.)
- Captain Patriotic: His love for Planet Guling can be displayed as the other two superheroes literally had to drag him away, under the orders of the Village Mayor, when the planet was under crisis in Season 11.
Tropes shared by the inhabitants of both planets:
- Alien Animals: The Woofians are alien dogs and the Miaolings are alien cats.
- Animal Jingoism: The doglike Woofians and the catlike Miaolings are rival races.
- Planet of Hats: Planet Wangcai/Planet Woof is a planet of dog aliens, while Planet Miaomei/Planet Miao is a planet of cats.
- Stock Animal Diet: The doglike Woofians like to eat bones, and the catlike Miaolings like to eat fish.