Characters: Fanboy and Chum Chum

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    Fanboy and Chum Chum 
Fanboy on the left, Chum Chum on the right.
Voiced by: David Hornsby (Fanboy), Nika Futterman (Chum Chum)

The eponymous, hyperactive duo, who live by the rule of no work and all play. They spend most of their free time hanging out in the local convenience store or having all kinds of wacky adventures in their house, which lacks any kind of adult resident. They are both comic book nerds (although much less so than Oz) and get ecstatic about the tiniest things.

Tropes shared by both:


Fanboy

Chum Chum

    Kyle the Conjurer (aka, Kyle Bloodworth-Thomason) 
Voiced by: Jamie Kennedy

Kyle is a snarky, grumpy kid who, depending on the episode, takes the role of either the antagonist or a tritagonist for Fanboy and Chum Chum. He actually possesses wizardly powers, although no one believes him.
  • Absentee Actor: He does not appear in the following episodes:
    • S1: "Pick A Nose" (photo only), "Dollar Day", "Trading Day" (was originally appearing but removed), "The Hard Sell", "Digital Pet Cemetery", "Berry Sick", "Monster in the Mist", "Brain Drain", "Fanboyfriend", "Norse-ing Around" (name seen), "Marsha, Marsha, Marsha", "Secret Shopper", "Total Recall", "The Tell-Tale Toy", "The Incredible Shrinking Fanboy", "Strings Attached", "Stan Arctica", "Jingle Fever", "Eyes on the Prize"
    • S2: ""I'm Man-Arctica!", "No Toy Story", "Game Boy", "Back From The Future", "Boog Zapper", "Risky Brizness", "Frosty Mart Dream Vacation", "Igloo of Irritation", "Hypnot O Zed", "Robo-mance", "Rattleskunkupine!", "Lucky Chums", "Dental Illness", "Champ of Chomp", "Get You Next Time", "Two Tickets To Paladise", "The Cold Rush", "Normal Day", "Freezy Freaks", "Super Chums", "Attack of the Clones"
  • Ambiguously Gay: When he and Fanboy are trying to decide which board game to play, his first pick is "Mr. Unicorn's Teddy Bear Dress Up Fashion Show".
    • In the "Fanboy and Chum Chum Bible", which is a compilation of ideas Eric Robles wrote down before the show started, Kyle was originally supposed to have a crush on Yo, and although he has never showed any interest in her in the actual series (nor have the two spoken to each other), this could make him Ambiguously Bi.
    • When he states that the town isn't big enough for two wizards in There Will Be Shrieks, look at his hand movements.
    • In "Fanboy A'hoy!", we get this:
    Kyle: And will there be decorative soaps with fancy perfumes?! [Pause] Excuse me for taking pride in my personal hygiene.
  • Aesop Amnesia: Despite admitting his friendship to the titular duo in "Sigmund the Sorcerer", he forgets it episodes later.
  • Alliterative Name: Kinda.
  • Anti-Hero
  • Badass Cape: Wears a black one, which symbolizes his personality.
  • Blank White Eyes: Gets these while summoning the Balhok in "There Will Be Shrieks".
  • Braces of Orthodontic Overkill: Kyle has fairly normal braces, but they're extremely noticeable due to his large teeth. In "Night Morning", he wears enormous headgear complete with its own train set.
  • Breakout Character: His popularity with fans may have lead him to get a bigger role in Season 2.
  • British Teeth
  • Cloud Cuckoolanders Minder: He serves as one.
  • Chick Magnet: In the episode "Face-Eating Aliens From Planet X" shows that he is liked by some of the girls; Marsha likes his braces, Lupe likes his accent, and Francine loves it when he makes the sky "dark and evilly".
  • Child Mage
  • Curtains Match the Window: Both his hair and outfit colors seem to contrast with each other.
  • Deadpan Snarker
  • Dynamic Character: Probably the only one who got any Character Development.
  • Ethereal Choir: This sometimes accompanies his scenes when he begins to cast a powerful spell or is being antagonistic.
  • Evil Laugh: He gets one in "Wizboy", "Lord of the Rings", "Kids In The Hall".
  • Evil Sounds Deep: Though not a villain, has a deep, masculine voice.
    • There are quite a few episodes where his voice tends to sink into a low, demonic tone - quite frightning for viewers.
  • Expy:
    • Of Harry Potter (Sigmund appears to be his Malfoy), although his attitude is extremely different.
    • He also seems to have the same personality as Squidward Tentacles.
  • Fiery Redhead
  • Green-Eyed Monster: He becomes this in "The Book Report of the Dead" and "Speed Eraser".
  • Grumpy Bear / Sour Supporter: Depending on whether he's siding with Fanboy and Chum Chum or antagonizing them.
  • Inept Mage
  • Inferiority Superiority Complex: There are hints of this in "Sigmund the Sorcerer".
  • Irony:
    • The episode "Cold War" reveals he never actually had anyone want to play with him before; yet he himself does not want to play with Fanboy and Chum Chum because they add random rules to their games.
    • In "Speed Eraser", after his revenge on Fanboy with the magic eraser doesn't go as planned, he literally attaches it to him and lists off what will be erased upon doing so. Yet seconds later, it's his own body that gets erased, when Fanboy tries to hold onto him.
  • It's All About Me: He tends to be full of himself a lot. When he was the eraser-er, he even called himself "King of the Chalkboard".
  • Letmotif: Usually whenever he appears, the background music consists of horns and harpsichords, reflecting his wizard-y self. When his bad side is shown though, it's replaced by a rather ominous Ethereal Choir.
  • Magic Misfire: Quite a bit, especially when Fanboy and Chum Chum get a hold of his magic wand.
  • The Mean Brit
  • Meaningful Name: The name "Kyle" means "narrow".
  • New Transfer Student: Well, technically, he was expelled from his Wizarding School, but same thing.
  • Oddly Visible Eyebrows: His brows can be over his bangs at times; other times they are under them.
  • Only Sane Man: When the plot demands it. Other times, he's just as quirky as the rest of the characters.
  • "The Reason You Suck" Speech: Delivers two of them, one in "Chicken Pox" and another in "Cold War":
    Kyle: Something's gone wrong! This is all your fault, you made me lay a bad egg! I got so mad, I probably hard-boiled it! And now, I'm going to be a chicken for the rest of my life!

    Kyle: Grr...you're cheaters! Charlatans! With your...made-up rules and airborne livestock?!! ''I call shenanigans!!
  • Red Eyes, Take Warning: He briefly has these in "Tooth or Scare". Has them again in "Heroes vs. Villains" when making his entrance.
  • Red Oni, Blue Oni: The blue to Fanboy and Chum Chum's red.
  • Slasher Smile: He sometimes flashes these when he gets an idea or plans revenge.
  • Surrounded by Idiots
  • Teacher's Pet: In "The Book Report of the Dead", Mr. Mufflin even refers Kyle as "suck-up".
  • Temporarily a Villain: In "Separation Anxiety", "The Winners" and "Speed Eraser", Kyle is a main antagonist, the third episode being the most extreme example yet.
  • Tome of Eldritch Lore: He's casually used the Necronomicon to get out of jams.
  • Took a Level in Jerkass: In "Speed Eraser", an erasing dance routine by Fanboy causes Mr. Mufflin to give Kyle's job as the board eraser-er to him. Out of jealousy, he spends much of the episode planning revenge with an eraser that erases anything literally, but it only causes Fanboy to have more fun, so this leads him to literally attach the eraser to Fanboy, much to his horror and shock. He instantly loses his jealousy though, when Fanboy accidentally erases his entire body.
  • Tsundere: Type A. He's always rejecting Fanboy and Chum Chum, but it has been hinted several times that he craves their friendship. Especially in the Sigmund the sorcerer episode.
  • Vitriolic Best Buds: Fanboy and Chum Chum believe they are best friends with Kyle, even though he makes it clear that he wants nothing to do with them. Although, in a show where you wouldn't expect there to be any Character Development, Kyle has actually started liking Fanboy and Chum Chum, and he even admits they're his friends in "Sigmund the Sorcerer."
  • Vocal Dissonance: His voice is naturally lower than most other preteen boys in real life.
  • The Voiceless: Does not speak in a number of episodes, though there are ones where he has a normal role but has said trope.
    • In "Man-Arctica The Ride", he is one of the citizens who rides the Ice Scream Extreme, but he doesn't talk apart from a startled yelp when Fanboy greets him, and whenever the others talk at once.
    • Another role of this is given to him in "Funny Face" - he is seen a lot, even in the title card, but he does not say anything except when laughing at Fanboy. The only vocalization he makes is a whistle when posing before a hand mirror seconds before it breaks.
  • Youthful Freckles: Has these.

    Yo 
Voiced by: Dyana Liu

An incredibly energetic girl who loves her digital pet Yamaguchi. She is one of Fanboy and Chum Chum's schoolmates. Being vulnerable to all things cute and tiny, she becomes extremely obsessive whenever Chum Chum is involved, often to the point of insanity.

    Ozwald "The Oz" Harmounian 
Voiced by: Josh Duhamel

A nerd who lives and runs a comic book shop with his mother. Considered by Fanboy and Chum Chum to be the smartest human being to have ever existed, due to his excessive knowledge of comics.

    Boogregard "Boog" Shlizetti 
Voiced by: Jeff Bennett

A local bully who works in the Frosty Mart convenience store alongside Lenny (although using the word "work" is probably giving him too much credit). He appears to treasure his possesions far more than the people around him and enjoys picking on kids much younger than him.

    Leonard "Lenny" Flynn Boyle 
Voiced by: Wyatt Cenac

Like Boog, he works in the local Frosty Mart. Lenny appears to be permanently stressed out/spiritless and absolutely loathes Fanboy and Chum Chum's hijinks. Basically a standard Butt Monkey of the show.

    Hank Mufflin 
Voiced by: Jeff Bennett

Fanboy and Chum Chum's class' Apathetic Teacher. Speaks with a ridiculously monotone, dull voice and is exceedingly hateful of his job. Sometimes refers to Fanboy as "Purple Kid" and to Chum Chum as "Talking Raccoon".
  • Apathetic Teacher: He's said more than once that it's only twelve years until his retirement.
  • Character Development: He somehow drops his apathetic persona in later episodes.
  • Everything's Deader with Zombies: He becomes a zombie in "The Book Report of the Dead" when Fanboy says a spell from Kyle's Necronomicon.
  • Eye Beams: Mr. Mufflin gets laser eye surgery in "Saving Private Chum Chum", allowing him to literally shoot lasers out of his eyes.

    Lupe 
Voiced by: Candi Milo

Fanboy and Chum Chum's schoolmate. Appears to be friends with Yo.

    Janitor Russ Poopatine 
Voiced by: Steve Tompkins

The janitor at Fanboy and Chum Chum's school.

    Oz's Mom 
Voiced by: Estelle Harris

She's... well... Oz's mom. Runs a comic book shop alongside Oz.

    Scrivener Elf 
Voiced by: Jeff Bennett

An elf created by Kyle who is often seen making notes for him.

    The Dollarnator 
Voiced by: Jeff Bennett

An artificially intelligent machine Fanboy has built in the future, the Dollarnator was sent back to the past to help the boys when they were in trouble. He has a lot of different skills and abilities that often prove to be unexpectedly helpful for the titular duo.

    Sigmund the Sorcerer 
Voiced by: Jeff Bennett

He and Kyle used to attend the same school for wizards, which is how they became rivals. Sigmund is clearly more acknowledged and advanced in wizardry than Kyle, much to Kyle's anguish.

    Man-Arctica 
Voiced by: Jeff Bennett

A superhero and the titular duo's idol.

    Thorvald the Red 

    Agent Johnson 
Voiced by: Jeff Bennett

    Francine 
Voiced by: Candi Milo