Eddie
Eddie and Hat. The latter wears one.
Portrayed By: Kiel Campbell (TV)
The main protagonist. He and his friend, Hat, want to pull a prank on Courtney. But they fail constantly throughout.
- Adaptational Dye-Job: Eddie describes himself as having red hair in the book but he has dark hair in the episode. Justified as he's been given a Race Lift.
- Be Careful What You Wish For: He is beyond desperate to scare Courtney for one. But when it finally happens, it involves actual mud monsters that nearly kill them. Eddie even lampshades that as he watches Courtney scream, this moment that he was waiting for wasn't quite how he wanted it to be.
- Determinator: He is absolutely ADAMANT to get back at Courtney almost to any extent. He put a real-looking rubber snake in her lunchbox, tried to drop tarantulas on her head, tried to send an aggressive dog her way, and finally have Kevin and his high school friends scare her by dressing up as mud monsters.
- Dirty Coward: When his worried neighbor asks him to help her get her cat out of a tree, he selfishly does not because he says he's afraid of heights.
- Disproportionate Retribution: Yes, Courtney humiliated him and Hat by throwing a couple of bees at them in front of many other students, but that was a one-time prank that she quickly got over. But because of this incident, this triggers Eddie's intent to get revenge on her through various and rediculous methods.
- Embarrassing Nickname: His brother, Kevin, likes to call him "Bugs" after Bugs Bunny, because of his large two front teeth.
- Green-Eyed Monster: Part of why Eddie hates Courtney so much is out of envy over the fact that she's so popular and The Ace at almost everything coming her way.
- Irrational Hatred: He and Hat really despise Courtney just because they view her as a snotty popular girl, even though she really isn't. This is worse in the TV episode, in which they torment her with pranks even though she never did anything wrong to them or anybody.
- Jerk with a Heart of Gold: Eddie is very rude most of the time and delves into malicious mischief, but when he realizes that Courtney and Denise are in actual danger with the mud monsters, he risks the entire operation to save them.
- Laser-Guided Karma: Hat and him steal tarantulas from the school science lab and throw them from a gym terrace onto a couple of students. They are immediately then caught by their teacher, who makes them clean the science lab after school and write essays on why their behavior was wrong.
- Named by the Adaptation: His surname, Campbell, is revealed in the television series.
- Not So Similar: He is this with Herb, who goes by the name Hat because he almost never takes off his hat which hides his nauseating hair inside. While Hat tends to be mischievous, he isn't extreme about it as Eddie is.
- Only One Name: He never reveals what his surname is. In fact, he doesn't reveal anybody else's surname, either.
- Race Lift: In the TV episode, he is portrayed by an actor who's probably Hispanic.
- Redheads Are Uncool: He has red hair, and he is an obnoxious loser who isn't popular at school.
- Troubling Unchildlike Behavior: He is so set on pranking Courtney that, at one point, he was willing to sic a vicious dog on her.
- Ungrateful Bastard: Courtney saves him from a snake on a field trip (a tarantula while in the closet in the TV episode). This does not make him change his mind about her, thinking that she just did that for attention.
- Unreliable Narrator: He portrays him and Hat as the heroes of the story. When in reality, they are anything but.
- Villain Protagonist: He spends the whole book harassing Courtney with pranks for mostly no good reason, and doesn't show any remorse for any of it.
- What You Are in the Dark: He is hiding in the bushes as part of a mud monster prank to scare Courtney and her best friend, Denise, and is initially impressed with the mud monsters that appear around them. But then Kevin arrives saying that he his friends got a flat tire and can't come, which means that these mud monsters around them right now are real. This causes Eddie to give up on pranking Courtney and comes out of his hiding place, telling them to run away in concern for her safety.
- You Are What You Hate: He hates the fact that Kevin picks and pulls pranks on him, despite the fact that he enjoys doing the same thing with Courtney.
Courtney King
Portrayed By: Charlotte Sullivan (TV)
A popular, smart girl who is seemingly not afraid of anything, but is very gullible when it comes to local legends about Mud Monsters.
- The Ace: And how! This girl is good at everything - sports, grades, climbing trees, is afraid of nothing...
- Adaptational Nice Guy: In the book, she threw bees at Eddie in the field trip, while in the TV episode, she did nothing to him and he decided to scare her when she never did anything to him. In Goosebumps HorrorTown, she is a lot less smug to others about how brave she is.
- Alpha Bitch: She's popular, good-looking, and virtually nothing can faze her. Mitigated by the fact that she's seldom "bitchy" to anyone except our Villain Protagonist(s).
- Anti-Villain: She may have been a bit rude to Eddie and his friend, Hat, but all she really did was humiliate them once by throwing a couple of bees at them and she gets over it. However, Eddie views this as her being a bully, and seeks revenge against her no matter what it takes.
- Call-Back: In Goosebumps HorrorTown, her encounter with the Mud Monsters as a child was brought up in the story, that the Mud Monsters are the only thing she fears.
- The Cloudcuckoolander Was Right: She believes that the mud monsters in her town are real. And even though her enemies are planning a prank on her with fake ones, it isn't far until they found out that there are REAL ones.
- Friend to All Living Things: You'd think Eddie and his friends would realize that she's not scared of animals when she tames bees, spiders and rabid dogs.
- Hair of Gold, Heart of Gold: Has blonde hair and, while a bit insensitive at first, is shown to be a caring and considerate person.
- Hero Antagonist: Despite being the supposed antagonist, Courtney's deeds throughout the story actually comes off more heroic compared to Eddie's.
- Insufferable Genius / Smug Snake: Especially in the TV episode, where she mocks the protagonists for trying to scare her and actually talks the monster to death. The Smug Snake part might be subverted since ultimately nothing blows up in her face and even when she finally does get scared (in the book) at being terrorized by the monsters, she still comes out on top by gaining more popularity from telling of her experience.
- Jerk with a Heart of Gold: She makes fun of Eddie on the field trip, but also saves him from a snake, offers to share her lunch with a teacher, and rescues a neighbor's cat from a tree.
- Lovable Alpha Bitch: She's not too bad of a person once you get past her irritating smugness.
- Meaningful Name: Her last name is "King", and she is The Ace in almost everything.
- Named by the Adaptation: Her surname isn't revealed in the book, but is stated in the TV version.
- Nerves of Steel: She isn't afraid of a real-looking rubber snake in her lunch bag, tarantulas falling right next to her, a rabid dog, and (in the television episode) a mud monster. No wonder the book is titled "You Can't Scare Me!"
- Nice Girl: Aside from her tendency to condescend to Eddie, she's rather kind.
- Parody Sue: Her ability to excel in everything she ever attempts seems deliberate just for the sake of having Eddie and his friends hate her.
- The Stoic: She acts this way in Goosebumps Horrortown.
Mud Monsters
Portrayed By: Garry Robbins (TV)
The Mud Monsters are zombies who live in the depths of Muddy Creek. Once a year they rise out of the creek to search for victims to drag back with them into the mud.
- Covered in Mud: They are mud.
- Flat Character: Despite being the book's featured monsters, they don't actually show up until the climax at the swamp and are pretty much shambling brutes with no apparent sentience. Of course, a centuries old mass of earth wouldn't exactly have a vibrant personality.
- Our Zombies Are Different: At this point, they're basically half human, half mud.
- Talking the Monster to Death: In the TV show, Courtney does this by going on a rant towards the Mud Monster in order to stall it long enough for it to dry out in the hot sun.
- Tragic Monster: They were originally poor settlers forced to live in huts alongside Muddy Creek because the richer citizens of the nearby village wanted nothing to do with them. On the night of a violent storm, the creek was flooded, washed the village away, and the settlers drowned to death.
