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Rudolph Bartholomew "Rudy" Tabootie
Voiced by: Elizabeth DailyThe main protagonist of the show. In the original Oh Yeah! Cartoons shorts, he was eight years old when he first discovered ChalkZone by finding a piece of magic chalk in his classroom. Come the show, he is now ten years old, and continues to have adventures in ChalkZone.
- Art Attacker: His main weapon is a piece of magic chalk, which can bring whatever he draws to life.
- Badass Adorable: He's only a kid, but his magic chalk enables him to accomplish many heroic feats.
- Badass Pacifist: He's not a violent person, and tends to solve his problems with drawing, convincing, etc.
- Berserk Button: Apparently, not being invited to birthday parties is one for him, as Poison Pen Letter has shown us.
- Disney Death: He's been hit with this at least three times.
- Embarrassing First Name: Rudolph.
- Give Geeks a Chance: Creators of the show have confirmed that Rudy and Penny would be a thing by the time they graduated.
- Green Eyes
- The Hero: He is the main protagonist and does everything he can to help out the people of ChalkZone.
- Idiot Hero: A mild example. He isn't stupid, but prone to carelessness.
- Kid Hero: He's in the 5th grade and has the responsibility of protecting ChalkZone.
- Kids Are Cruel: Well to Mr. Wilter, but mainly averted.
- The Kirk: He balances the differing attitudes of Penny and Snap.
- Nice Guy: He really enjoys helping people out and gets worried when his friends have problems.
- Nice Job Breaking It, Hero!: Some of the problems that happen in ChalkZone are his fault. Other times he stumbles onto something and does his best to help.
- Puppy Love: He's got an obvious crush on Penny.
- Save the Villain: Rudy has had to bail out Reggie Bullnerd several times when he got the blame for something Rudy did.
- Took a Level in Badass: Drawing wise, Rudy's first ever drawing was Blocky in 1st grade. 2nd grade? He made an old woman in a bathtub and by fifth grade, his mom stated that it took him only four weeks for the newspaper to get his comics published whereas the mom took four years for a single article.
- Vocal Evolution: His voice was higher in the Oh Yeah! shorts than it was in the series.
Penelope Victoria "Penny" Sanchez
Voiced by: Hynden WalchRudy's friend/love interest. She is a studious ten-year old girl who was introduced to the world of ChalkZone when Reggie Bullnerd erased her scientific formula, and Rudy took her into ChalkZone in an attempt to get it back. Since then, she's often accompanied Rudy on his misadventures.
- Adorably Precocious Child: In one episode, she creates a perpetual motion machine!
- Adorkable: She is very smart and also nice.
- Ambiguously Brown: Penny appears to be Latina as shown by her name, skin tone, and the fact she apparently knows Spanish. But it's never really stated or explicitly shown.
- Badass Adorable: Like Rudy, she is a likable child and has done her share of saving ChalkZone.
- "This is unacceptable!" (Rather ironic considering a future role Hynden would later work on). The episode Taffy hints that she apparently gets it from her mother.
- She likes to say "Fascinating" when she makes a new discovery. You know, being a scientist and all.
- She also says "Rudy, you're alright!" when Rudy recovers from a Disney Death or some other perilous situation.
- The Chick
- With a touch of Action Girl when need be.
- Child Prodigy: She is very intelligent. In some cases, one would wonder how she's still in the same class as Rudy.
- Clingy Jealous Girl: Mild case; she's not pleased when Rudy develops a crush on Trina.
- Cute Bookworm: She likes reading books. Overlaps with Badass Bookworm sometimes.
- Deadpan Snarker: She sometimes makes cutting remarks about the weirdness of ChalkZone.
- Face–Heel Turn: In "Chalk Queen", Skrawl captures her and convinces her to join forces with him, as since Rudy didn't help her with her homework, they both have a bone to pick with him. (That, and Skrawl threatened to feed her homework to a dog.)
- Fake Defector: It was all just a ruse to get Skrawl to trust her enough to give her access to the magic chalk and help Rudy defeat him.
- Fang Thpeak: She has this kind of impediment for no visible reason.
- Meganekko: She wears glasses.
- Nice Girl: Like Rudy, she is a decent human being.
- Red Oni, Blue Oni: The blue oni to Snap's red.
- Secret Keeper: After she found out about ChalkZone, she swore to keep it a secret.
- Slouch of Villainy: The first shot of her as the "Chalk Queen" has her sitting like this◊ on her throne.
- The Smart Girl: She tends to be the brains of the team.
- The Spock: She is the group's intellectual.
- This Is Unforgivable!: Her Catch-Phrase when something bad happens to her.
- Vitriolic Best Buds: She often gets into disputes with Snap.
Voiced by: Candi MiloA superhero-like zoner created by Rudy when he was eight years old. When Rudy entered ChalkZone, he discovered Snap and the two have gone on adventures as close friends. There are times when Snap entered the real word, either on purpose, or dragged there by being kidnapped.
- A Day in the Limelight: Every episode in the show has a skit with him as the main protagonist.
- American Accents: Snap has a Bronx accent.
- Sometimes. It can end up all over the time. Considering Rudy drew him at the age of 8, maybe this was intentional.
- Badass Adorable: It comes with the territory of being a living version of a chalk drawing Rudy made when he was 8.
- Berserk Button: Just don't tell Snap that he's Plucky Comic Relief.
- "Oy Coloy!"
- Also "RUDY, YOU GOTTA DRAW SOMETHING!" which is occasionally borrowed by other characters (usually Penny)
- Deadpan Snarker: Frequently makes remarks about the trouble he gets into.
- Fingerless Hands: He has no fingers.
- Hollywood Tone-Deaf: In "The Big Loo". Otherwise, he doesn't sing that bad.
- Jerk with a Heart of Gold: Usually in the earlier episodes.
- Kid-Appeal Character: He's dressed like a superhero, is less responsible than Rudy and Penny, and is even way younger than them due to being a living drawing.
- The Lancer: He is always at Rudy's side.
- The McCoy: He is the most emotional of the trio.
- The Nicknamer: Mild case; he's dubbed Rudy "Bucko" and Penny "Buckette" though she doesn't really care for it.
- Plucky Comic Relief: Though he doesn't like being called this trope.
- Red Oni, Blue Oni: The red oni to Penny's blue.
- Vague Age: While he's technically about two years old, his physical age is a mystery. He looks and acts like he's around Rudy's age, he has been shown to live on his own and has driven a car on at least one occasion.
- Verbal Tic: "Right, Bucko?"
- Vitriolic Best Buds: He often gets into disputes with Penny.
- Vocal Evolution: His accent was more notable in the series than in the Oh Yeah! shorts.
- Your Approval Fills Me with Shame: On at least a couple of occasions, Snap will make Rudy realize he's doing wrong...by applauding them. In Disappearing Act, his cheering on of Rudy's practical joke on Reggie makes Rudy feel guilty about it. In The Smooch, when only a smooch can undo Penny's uncontrollable laughter, Rudy tried to trap her, and when Snap congratulates him on it, Rudy decides not to go through with it.
Reginald Clark "Reggie" Bullnerd
Voiced by: Candi Milo
- The Bully: He always picks on other kids.
- Butt-Monkey: He quite often gets humiliated as a result of Rudy's actions.
- The Chew Toy: His humiliation is satisfying because he otherwise isn't punished for his bullying.
- Cloudcuckoolander: He is very eccentric at times.
- The Ditz: He apparently thinks that cow is spelled k-o-w.
- Dumb Muscle: While lacking in brains, he does have plenty of brawn.
- Evil Counterpart: He temporarily became one to Rudy in "Reggie the Red" after he found a piece of red chalk and used it to terrorize everyone in ChalkZone.
- Fat Idiot: He is a bit overweight.
- Jerkass: He has very few scruples.
- Kids Are Cruel: He is a bully.
- Large Ham: He often raises his voice.
- Small Name, Big Ego: Several episodes reveal that he thinks he's better than he actually is.
- Those Two Guys: With his dad, Bruno.
Mr. Horace T. Wilter
Voiced by: Robert Cait
- Berserk Button: Don't draw something in front of Mr. Wilter unless you want him to go on a tirade about how much he hates fictional....CARTOONS!!
- Butt-Monkey: He never catches a break.
- The Eeyore: He is rarely in a positive mood.
- Evil Teacher: Subverted in that, though he does not like it when his students draw cartoons, he's just really strict, not evil.
- Freudian Excuse: In one episode, Rudy discovers a duo of chalk characters who were drawn several years ago. We discover their creator is none other Mr. Wilter. He is actually quite happy to see them and we soon discover that his disdain for cartoons comes from his dad treating him the same way Mr. Wilter treats his students now whenever he drew cartoons.
- Gag Nose: Has a long pointy nose.
- Go-Karting with Bowser: On at least a couple occasions, he will join in on Rudy and his friends in the music videos and party with them. Subverted in Greetings from Greenland, where he is quite freaked out by the animated postcards.
- Jerkass: He'll be unrelenting to whoever dares draw a cartoon.
- Pet the Dog: He shows instances of this in certain episodes, but "Howdy Rudy" probably provides the best case scenario. If him being impressed with Rudy and Penny's puppet and later showing sympathy when it was destroyed (despite his hatred of cartoons) isn't enough, then how about showing sympathy for Rudy when he took a minor spill caused by Reggie's dog? Keep in mind that the spill he took wasn't even that bad.
- Sadist Teacher: He'd have to be if he is willing to stunt creativity on the grounds that he hates cartoons.
Voiced by: Jess HarnellRudy's father who runs a butcher shop/deli restaurant.
- Bumbling Dad: As with most cartoon fathers.
- Canada, Eh? / Just a Stupid Accent: Has a Canadian accent for no explained reason.
- The Ditz: He is not very bright.
- Gag Nose: He has a big nose.
- Good Parents: He tries to do what is best for his son Rudy.
- Happily Married: He and Mildred never have any problems with one another.
- Jerk with a Heart of Gold: Depending on the Writer
- Lethal Chef: Zigg-zagged. He's perfectly fine when he creates normal meat prodcts, but he tends to come up with bizarre ideas like cheeseburger smoothies and hamburgers in lime gelatin, and doesn't understand why these never sell.
- Unexplained Accent
Voiced by: Miriam Flynn
- Catch-Phrase: She likes to call Rudy by operatically singing his name.
- Good Parents: She loves her son and tries to make it so that he makes the right decisions and is happy.
- Happily Married: She is always happy to be with her husband Joe.
Voiced by: Iona Morris
- Fat Bastard: She is overweight and at times can be very pushy.
Voiced by: Jeff Bennett
- Big Eater: As featured in The Heist.
- Fat Idiot: He's not always very smart.
- Gonk: His face is very odd-looking.
- Out of Focus: He stopped appearing during the third season, but resumed making appearances in season four.
- Those Two Guys: With his son, Reggie.
Officer O' Larry
- Voiced by: Steve Kehela
- Fat Idiot: He is easily diverted from discovering ChalkZone.
- Gag Nose: He has a pointed nose.
- Officer O'Hara: Has an Irish accent.
Voiced by: Grey DelisleA newsreporter that first appeared in The Wiggies. She eventually gets wise to ChalkZone and dedicates herself to exposing it.
- The Conspiracy: She connects the strange events plaguing Plainsville, including the wiggies and the chalk water that turned adults into ninnies, to ChalkZone, and knows full well that Rudy and Penny are trying to keep that world a secret.
- Determinator: Nothing will make her give up trying to reveal ChalkZone to the public. Not even having her hair chewed off again by a wiggie on national television and being demoted to small news was enough to make her give up.
- Evil Redhead
- From Nobody to Nightmare: Starts off as a generic reporter who was relatively harmless. Come Indescent Exposure, and she's suddenly upgraded into a cunning and dangerous woman who came very close to exposing ChalkZone. She harasses Rudy and Penny, stalked them for months to get information, and even kidnapped Snap at one point.
- Greater-Scope Villain: She is a bigger threat than Skrawl, but is only featured as the main antagonist in two episodes.
- Knight of Cerebus: Several villains, both from ChalkZone and from the real world, have some funny or redeeming qualities. Terry...not so much.
- Stalker Without a Crush: It's revealed in "Snap Vs. Boorat" that she has been constantly stalking Rudy and Penny for ChalkZone-related information. Even Vinnie was unsettled by this.Vinnie: Wow, you really are obsessed.
- Villain Team-Up: She joins forces with Vinnie in one episode to try to steal the magic chalk.
Voiced by: Rob PaulsenA greedy business man who discovers ChalkZone after Rudy forgets to close the portal. He wants to create a theme park in that world to get rich.
- Animal Motif: He barks like a dog when he's angry.
- Bad Boss: Before he discovers ChalkZone, he wasn't very nice to his construction worker. It doesn't help that it was his brother.
- Dark Is Evil: He wears a black jacket and has black hair.
- Determinator: He is obsessed with making his chalk world theme park, still clinging to it even months later. And that's not even getting into his first episode, where Rudy had to work extremely hard just to get him to leave.
- Even Evil Has Loved Ones: Subverted."Now, listen. You're my brother, and I love you dearly...but if you don't turn this school to a pile of rubble by 3:00 this afternoon, I'll do it myself, and use YOU AS THE WRECKING BALL!!!"
- Even Evil Has Standards: He was clearly unsettled by Terry's stalking of ChalkZone-related information. It was brief, but still.
- Expy: He has black hair, he wears a black leather jacket, he's Italian...doesn't he kinda look like an evil Fonzie to you?
- Greater-Scope Villain: Being a human and thus able to use magic chalk and wanting to expose ChalkZone to more humans, he is more dangerous than any villain in ChalkZone.
- Jerkass Has a Point: Even though he's a greedy sleazeball for a construction manager, that old school still had to be demolished, and he had every right to be angry at Rudy and Penny for trespassing on that construction site, even to recover an old love letter from the former's father.
- Villain Team-Up: He joins forces with Terry in one episode to try to steal the magic chalk.
- Would Hurt a Child: While he doesn't actually do anything to Rudy, in Follow The Bouncing Bag, his comment of making Rudy tell him how to get into ChalkZone combined with his body posture seem to hint that he's willing to use force against a child to get what he wants.
Voiced by: Jim CummingsThe most recurring antagonist on the show. Skrawl was originally going to be a birthday gift by Rudy to a kid at a birthday party, but Reggie Bullnerd and his friends ruined it, and Rudy erased him into ChalkZone. Ever since then, Skrawl has blamed Rudy for his grotesque appearance, and constantly schemes to bring him down.
- Arch-Enemy: To Rudy, according to the brain in "Skrawk's Brain".
- Benevolent Boss: Believe it or not, he is this to the Beanie Boys. He doesn't abuse, beat, or yell at them like most other villains (unless they're Beanie Boys in training, as we've seen in "Beanie Boys to Men"). He also appears to be protective of them, as when Rudy deflects his giant brain's lasers back at him in "Skrawl's Brain", he shouts "Look out!"
- Big Bad: He is the most frequently recurring antagonist. In fact, in "Skrawl's Brain", the titular brain refers to him as Rudy's archnemesis.
- Card-Carrying Villain: "I'm evil, get it?"
- Create Your Own Villain: Subverted. Although Rudy didn't really draw him, Rudy knew about ChalkZone when he erased Skrawl. The subversion is in play because Rudy had no reason to think he'd become evil or seek revenge.
- Creepy Jazz Music: Has a little jazz tune for both his Leitmotif and Villain Song.
- Dastardly Whiplash: Has this look in his debut episode when Rudy tries to fix him. though he fits more into the Evil Genius variety.
- Disproportionate Retribution: His entire reason for wanting revenge on Rudy is for drawing him the way he is, something Rudy didn't even do.
- Enemy Mine: Is forced into this in "Skrawl's Brain."
- Hidden Depths: According to an interview with Bill Burnett, the reason why Skrawl is crying at the end of Let's Go Wandering is not because it's a nod to the end of the series, but instead it's because Rudy is still his creator, the one who practically gave birth to him, and without him, he would literally be nothing. In Bill's own words, it would be like "saying goodbye to God".
- This could explain why Skrawl seems to express more interest in just enslaving Rudy rather than just killing him.
- Leitmotif: His appearances are sometimes accompanied by an instrumental version of his Villain Song.
- Meaningful Name: He was scrawled onto a chalkboard.
- O.O.C. Is Serious Business: Skrawl sadly waving goodbye to the ChalkZone gang as they leave in Let's Go Wandering? Why, that isn't End-of-Series Awareness at all.
- Pet the Dog: Surprisingly enough, a Freeze-Frame Bonus near the end of the music video "Let's Go Wandering" has him waving goodbye to the ChalkZone gang, rather than attacking them like he usually does. His sad face is what sells it.
- Supervillain Lair: A castle on top of a giant cactus.
- Ungrateful Bastard: Even after Rudy tried to fix his appearance in his debut episode, he decided to drop everyone to their doom anyway.
- Vile Villain, Saccharine Show: Episodes featuring him tend to be a lot more serious.
- Villain Decay: Compare his meatball scheme in "Calling Dr. Memory" to his very first appearance in "The Skrawl", where he essentially tried to mass murder a bunch of people.
- On the other hand, considering the fact that memories are highly malleable and changeable, and the fact that the scheme was shown from Snap's memory rather than a present event, there's a chance that this was simply a case of Unreliable Narrator.
- Villain Song: 'Skrawl's Song' and it's reprises.
- Vocal Evolution: His voice sounds more like Pete in the episodes after his debut, whereas he sounded more like Cat in his debut episode.
- We Can Rule Together: "With your talent, and my ambitions, we can rule ChalkZone as king and queen!"
- Would Hurt a Child: No duh.
Voiced by: Lori Alan
- Brain in a Jar: Less a jar, but she's nothing but a brain in some housing with said housing holding her facial features. Obtaining a real body is her major goal.
- Giant Woman: She is after all a giant brain, it only makes sense she would need a gigantic body to contain it. When Rudy drew her a body, it was suitably gigantic.
- The Starscream: She started out as Skrawl's henchwoman, but she turns on Skrawl and becomes a bigger threat to deal with. Rudy even needed Skrawl's help to take care of her, much to Skrawl's displeasure.
Voiced by: Rob Paulsen (Craniac 3, Craniac 4 in Double Trouble, and the Craniac who makes a cameo in Mine Alone), Robert Cait (Craniac 4 in Future Zone)A race of futuristic robots obsessed with collecting futuristic devices. This includes Rudy's "instant matter materializer", aka his magic chalk.
- Big Bad Ensemble: With Skrawl. Despite not appearing as often as him, they do share a sinister presence.
- Cold-Blooded Torture: Craniac 3 puts Rudy through this to try to get information from him.
- Create Your Own Villain: Craniac 4 was created to take care of Craniac 3. He did...but it didn't help.
- Early-Bird Cameo: Before Craniac 3's introduction in Future Zone, he made a couple appearances in Snapmobile. And no, he wasn't very nice in that episode either.
- Enemy Mine: Implied in Purple Haze, where a Freeze-Frame Bonus shows a Craniac just sitting in his UFO, not attacking the good guys, and actually looking concerned about the titular haze.
- Evil Laugh: They have a rather monotonous one. You know, being robots and all. More oomph was put into it in their cameo in Snap's Imagine Spot in Mine Alone, ironically enough.
- Insistent Terminology: Craniac 3 insists on calling Rudy's magic chalk an "instant matter materializer". Same goes for Craniac 4 in Future Zone, but in Double Trouble he just calls it "chalk", dropping this trope.
- Villain Team-Up: Craniac 4 teams up with Skrawl in Double Trouble.
Voiced by: Rodger Bumpass
- The Big Guy: He is huge and very strong.
- Cyclops: He used to be this before Rudy gave him another eye.
- Gentle Giant: He towers above Rudy and friends, but he's always happy to see them.
- The Mentor: He informs Rudy about his responsibility with the magic chalk.
- Only Sane Man: The most level-headed denizen of ChalkZone.
- Our Giants Are Bigger: A large cone-shaped being with white skin and his eyes are stacked on each other.
Voiced by: Rosslynn Taylor
- Ambiguously Brown: If the No Celebrities Were Harmed is correct, she may be black.
- No Celebrities Were Harmed: Possibly a reference to Queen Latifah.
- Punny Name: Her name is a pun on the Biblical figure the Queen of Sheba.
Barney the Encyclocentipedia
- Voiced by: Malcolm McDowell
- A Fate Worse Than Death: When Barney detaches his parts in self defense against a praying mantis, he is reduced to a babbling moron, unable to think clearly enough to defend himself. If it weren't for Rudy, Penny, and Snap being present to help him, he would have stayed like that forever, if one of the predatory zoners living in the area didn't eventually get him.
- Hates Being Touched: When Rudy attempts to look up information, Barney is shown to be quite sensitive to being poked and prodded like that. This could contribute to why he prefers being alone.
- The Hermit: He lives alone in a dangerous forest and prefers it that way.
- Heterosexual Life-Partners: He and King Mumbo Jumbo were the best of friends. He is even overjoyed to see that he is still alive.
- Intelligence Equals Isolation: Because he's a living encyclopedia, he has information on virtually everything in ChalkZone, but he prefers to be left alone because he's been annoyed by how often people turn to him for help.
- Jerk with a Heart of Gold: While not sociable, he does help Rudy and his friends put an end to the spreading of Balloonemia and also had a close friendship with King Mumbo Jumbo, even crying when his assumed death was brought up.
- My God, What Have I Done?: He was the one who helped King Mumbo Jumbo seal himself away with the Inflatermaus swarm for 300 years. When it was believed that King Mumbo Jumbo died in the interim, Barney actually blames himself for his close friend's supposed death. Fortunately, it turns out that the king only went into hibernation until a chalk-wielder could help him.
- Really 700 Years Old: He has existed for at least 300 years.
King Mumbo Jumbo
- Voiced by: Corey Burton
- Big Good: He is the king of ChalkZone and does everything he can to help his people out.
- The Good King: If willingly sealing himself with the Inflatermaus swarm for 300 years and helping Rudy reseal them after they break free doesn't prove he's a benevolent ruler, then nothing does.
- Heroic Sacrifice: Both the lethal and non-lethal variants are subverted. When his tortoise shell is found in the same temple that the Inflatermaus swarm was sealed in, it was initially assumed that King Mumbo Jumbo died after sealing himself within the temple to keep the swarm from spreading across ChalkZone. It turns out that he was hiding in his shell for 300 years until he could pass his flute on to someone else, and when King Mumbo Jumbo resumes playing the flute to keep the swarm from harming Rudy, Rudy draws a glass wall in front of the Inflatermaus swarm so that the king no longer has to stick around to protect his people from the Inflatermaus swarm.
- Heterosexual Life-Partners: He and Barney got along pretty well.
- Really 700 Years Old: He let himself get sealed in a temple along with the Inflatermaus swarm for 300 years.
- Royals Who Actually Do Something: He selflessly trapped himself in a temple to keep the Inflatermaus swarm from harming anyone and helps Rudy Tabootie deal with the Inflatermaus swarm before he traps them behind a glass wall.
- Sealed Evil in a Duel: He and the Inflatermaus swarm were trapped inside a temple for 300 years until Rudy mistakenly let the Inflatermaus swarm escape and subsequently found King Mumbo Jumbo alive and well.
- Turtle Power: He is a bipedal tortoise.
Voiced by: Tim CurryA singing skeleton with a pumpkin for a head who appeared in two episodes, on both occasions being angry at Rudy because he thought he stole his bride.
- Affably Evil: Rudy's long-defucnt journal on Nickelodeon's website states that he's very mean, but also very romantic, and legitimately wants to make his marriage with "jill-o-lantern" a perfect one. Even Rudy admitted in said journal that he can't help but find that sweet, in a warped way.
- Dem Bones: His body is a skeleton.
- Disproportionate Retribution: In his first appearance, he tried to kill Rudy for stealing the woman he loved (it was actually a jill-o-lantern that Rudy made for his school's jack-o-lantern contest). In his second appearance, he threatens to bury Rudy alive unless he draws a new bride even though his drawing arm is broken and he swore to never use his magic chalk to draw a living thing unless in the most dire of circumstances.
- Fourth Date Marriage: The minute he sees Rudy's "jill-o-lantern" was the minute he wanted to get married.
- Lean and Mean: He is tall, skinny, and not on friendly terms with Rudy.
- Pumpkin Person: He has a jack-o-lantern for a head.
- Vocal Evolution: Tim Curry voices the character in both of his appearances, but he has a more subdued voice in his debut, while his second appearance has him sound more like Nigel Thornberry.