Eric and Claire

Eric and Claire is an American animated supernatural-comedy-drama television series, being created by Craig McCracken. It is produced by Cartoon Network Studios and it has aired on Cartoon Network since October 27th, 2016.

Synopsis
This series focuses on fifteen-year-old Eric McEdderson and his six-year-old ghost friend, Claire (and sometimes their friends) as things happen in Strangon, Ohio.

Main

 * /Eric McEdderson/ (voiced by Seth Green) - a shy fifteen-year old boy who befriended Claire as he often has to deal with a bunch of stuff from home and school, while also sometimes being paranoid about things.
 * /Claire the Ghost/ (voiced by Grey Griffin) - a cheerful six-year old ghost girl who is Eric's best friend. She is ditzy and has a passion for sweets. She had a voice disorder where she sounds muffled when talking, until it was revealed by a curse placed onto her by old members of the Children of the Dark Moon in Claire's Long Lost Brother. She finally began to speak properly as of Taken and Trapped Pt. 4.

Supporting

 * Emily McEdderson (also voiced by Grey Griffin) - a short-tempered four-year old girl who is Eric's younger sister and despises Joshua, give Eric suggestions, watch Polly and Horsey, and sometimes hangs out with Trixie.
 * Brandon Hemperger (voiced by Mark Hamill) - a somewhat lazy and overweight teenager who is Eric's best friend as he loves junk food and isn't really bright.
 * Brittney Hemperger (voiced by Jessica DiCicco) - a snarky teenage girl who is Brandon's older sister as she usually spends time on her phone and hates when people, especially Brandon, enter her room and bother her.
 * Coco the Pug (vocal effects by Dee Bradley Baker) - The Hempergers' cheerful pet Pug who likes to sit around and play, as well as sometimes licking people.
 * Michael Stedee (voiced by Rob Paulsen) - an intelligent teenager who is Eric's other best friend as he is fascinated with science.
 * Tyson (vocal effects by Frank Welker) - Michael's pet Siberian husky who is very loyal.
 * Melissa Wilson (voiced by Hynden Walch) - a sweet and caring teenage girl who cares deeply for Eric as she is in a relationship with him.
 * Joshua Wilson (voiced by Elizabeth Daily) - a spoiled little boy who is Melissa's little brother as he often bullies other kids, especially Emily, as the both of them have a rivalry with each other.
 * Jacob the Ghost (voiced by TBD) - a shy and well-meaning little ghost boy who is Claire's twin brother as has been wandering around looking for Claire until she and Jacob finally reunited.
 * Earl and Elsa McEdderson (voiced by Patrick Warburton and Kath Soucie, respectively; Earl voiced by Jason Spisak as child/teenager) - Eric and Emily's parents.
 * Bruce and Bianca Hemperger (voiced by TBD and Candi Milo, respectively) - Brandon and Brittney's grumpy parents who often don't get along too well with other parents.
 * Mr. Williams (voiced by Dave Fennoy) - Eric and Claire's history teacher.
 * May (voiced by Lacey Chabert) - one of Eric and Claire's classmates who is artistic.
 * Shawn (voiced by Khary Payton) - another one of Eric and Claire's classmates who enjoys hip-hop music, flirting with other girls, etc.
 * Huevos (voiced by Jess Harnell) - yet another one of Eric and Claire's classmates who loves eggs.
 * Trixie (voiced by Cree Summer) - Emily's best friend who is rather passive.
 * Ms. Hienersmit (also voiced by Kath Soucie) - Emily's pre-K teacher.
 * Ahana Asuma (voiced by Kat Cressida) - a fictional character from Eric's secret anime, Pony Tailz.
 * Polly (voiced by Liliana Mumy) - a fictional cartoon character from Polly and Horsey.
 * Horsey (voiced by Eric Bauza) - a fictional male cartoon horse who is Polly's best friend/pet.
 * Owen Ocelot (voiced by Michael Dorn) - a fictional cartoon ocelot character from Brandon's favorite show, I Wonder What 2 + 2 Equals.
 * Anna Andover/Specter-Woman (voiced by Susan Eisenberg) - a fictional superhero from the comic, Specter-Woman, that Claire used to read back when she was alive and Specter-Woman inspired Claire to be "Polter-Girl" when Claire saw her new TV show.
 * James (voiced by Max Charles) - a naive little boy who Claire had a crush on.
 * Sparky (vocal effects by Dee Bradley Baker) - James' pet Yorkshire Terrier.
 * Suzie Fain (voiced by Cristina Pucelli) - a ditzy, yet very friendly teenage girl who is rather goofy and is the manager of Big Mama's Sweet Ol' Burgers, as she has been attempting to help Brittney with her job.
 * The Spider Thing (voiced by Greg Cipes) - a weird but well-meaning spider-like creature who sometimes aids Eric and Claire.
 * Carl Toon (voiced by Tom Kenny) - a gnome who helped Emily get rid of Ant I. Toon's cartoons.
 * Ant I. Toon (voiced by Kevin Michael Richardson) - a gnome who was Carl Toon's brother who created Vacko and the other cartoons so he could have friends, but unexpectedly became villains.
 * Bludo (also voiced by Mark Hamill) - a bird-like monster who is Heart Ladybug's arch-nemesis and is the only cartoon created by Ant I. Toon that is not evil. He is basically a parody of Ludo.
 * George Duck (voiced by Carlos Alazraqui) - a talking mallard duck who gained an ability to talk through an experiment.
 * The Outcasts, consisting of:
 * Spencer Hattitan (voiced by David Kaye) - a spider-like creature wearing a big hat who is the leader of the Outcasts.
 * Clyde (voiced by John Kassir) - a clown ghost who is the comic relief of the group.
 * Ssstan (voiced by Richard Steven Horvitz) - a snake ghost who has the ability to shed his skin to a skeleton and is the wise guy of the group. He gained the ability to speak after his death.
 * Cywolf (voiced by Danica McKellar) - a Cyclops-werewolf hybrid who can be rude to others, but even so, she still cares about them.
 * Eya (voiced by Cindy Robinson) - a humanoid supernatural creature who doesn't talk, but laugh, cry, etc, has both of her eyes on each of her hand for some reason, and is very kind.
 * Fiery the Heatman (voiced by Fred Tatasciore) - a goofy fire entity that Claire befriended with.
 * Erica McEdderson (voiced by Clare Grant) - a fifteen-year old teenage girl who is the genderbent version of Eric McEdderson.
 * Ezekiel "Cool E. Oh" McEdderson (also voiced by Khary Payton) - a fifteen-year old African-American teenager who is the hip version of Eric McEdderson.
 * Eric McBeagleson (also voiced by Seth Green) - a fifteen-year old anthropomorphic beagle who is the animal version of Eric McEdderson.
 * Erikku Matsashima (voiced by Travis Willingham) - a buff animesque-like teenage boy who is the animesque version of Eric.
 * Ericus (also voiced by Seth Green) - a shadowy figure who is supposedly the dark spirit version of Eric McEdderson.
 * ER1C-1016 (also voiced by Seth Green) - a serious robot who is the robotic version of Eric McEdderson.
 * The S.N.D. Gang, consisting of:
 * Rot (voiced by Charlie Adler) - a red skinny demon who is the leader of the group.
 * Wasser (also voiced by Khary Payton) - a blue, fat demon who is Rot's best friend.
 * Paige (also voiced by Cree Summer) - a pink, short demon who is the only female.
 * Ivy (voiced by Ashley Johnson) - a goth girl who was thought of as a huge jerk, but is actually friendly.
 * Daniel (voiced by Kari Wahlgren) - a friend of Emily who is afraid of the dark, not because of the dark itself, but because of what's in there.
 * Clare the Mind Ghost (also voiced by Liliana Mumy) - a shy yet sweet teenage ghost girl who Eric once felt in love with, much to Melissa's chagrin, as she has mind-controlling powers, but only uses it for good purposes and sometimes just for fun.
 * Jessica Muniz (voiced by Tara Strong) - an old friend of the Hempergers who lives in Brazil and quickly befriends Eric and Claire after being introduced to them.
 * The Elemental Spirits, consisting of:
 * Mizu the Water Spirit (also voiced by Ashley Johnson) - a female water spirit who is the leader of the elemental spirits.
 * Kaze the Air Spirit (also voiced by Tara Strong) - a female air spirit who is Mizu's best friend and is the ditziest of the group by far.
 * Ki the Grass Spirit (voiced by Erica Lindbeck) - a female grass spirit who is rather serious.
 * Yogan the Fire Spirit (voiced by Justin Roiland) - a male fire spirit who is ironically Mizu's love interest.
 * Doro the Ground Spirit (also voiced by Kevin Michael Richardson) - a male overweight ground spirit who is the comic relief of the group.
 * Landon Stedee (voiced by James Arnold Taylor) - Michael Stedee's cousin.
 * Nicholas "Nick" (voiced by Jeffrey Combs) - a man who owns the newest restaurant, Nick's Cookiria, and has planned on giving his 1000th customer a free jumbo chocolate chip cookie.
 * Giggly (vocal effects by Audrey Wasilewski) - a guinea pig who was lost, but then found by Claire as she wanted to keep it.
 * Tabby (voiced by Audrey Wasilewski) - a student who was thought to be a psychopath, but is actually a nice student.
 * Avery, Bailey, and Chloe (voiced by TBD, TBD, and Naomi Hansen, respectively) - three little girls who are triplets, as Avery is the quiet one, Bailey is the pretty but snobby one, and Chloe is the shy and kind one.
 * Jack Smith (voiced by TBD) - a cunning but somewhat selfish detective who uses a spell book to fight off demons.
 * The Fog Frog (vocal effects by John DiMaggio) - a giant frog that can breathe fog through its mouth.
 * Kelly Virus (voiced by TBD) - a kind-hearted young woman who is a pop star as Eric accused her for brainwashing Claire after discovering her becoming obsessed with Kelly's songs.
 * Giggy (vocal effects by TBD) - a goofy and joyous gremlin who befriended Claire and decide to let his gremlin friends follow her.
 * Petra the Poltergeist (also voiced by Ashley Johnson) - a sad poltergeist girl who lost all of her friends and family to another supernatural being as she has been alone for a while now, as Claire made friends with her.
 * Wayne and Val (voiced by TBD and TBD, respectively) - a short-tempered werewolf and sarcastic vampire who hated each other yet Claire wanted them to be friends, but was soon successfully done after Madame Freakshow tried to take all three of them.

Antagonists

 * Madame Freakshow (voiced by Tress MacNeille) - a supernatural being who had a grudge against humans ever since her death and is the main antagonist of the show since Carnival Paranormal.
 * Zolf (also voiced by Kevin Michael Richardson) - a zombie wolf who is a complete moron.
 * Spines (voiced by Jim Cummings) - a skeleton who gets easily annoyed, especially by Zolf.
 * Dolly (also voiced by Tara Strong) - a living doll who is intelligent.
 * Brody Malo (voiced by Sean Astin) - a fifteen-year old boy who bullies Eric, Claire, and their friends and was the main antagonist until Madame Freakshow replaced him as one.
 * Byron Devlin (also voiced by Rob Paulsen) - a fifteen-year old overweight boy who is Brody's best friend.
 * Darcy Hari (voiced by Catherine Taber) - a fifteen-year old girl who is Brody's girlfriend.
 * Kennedy Turpin (also voiced by Tom Kenny) - a fifteen-year old boy who is Brody's friend, though he is dumb and can be an annoyance to him.
 * Rekah (voiced by Dee Bradley Baker) - a mysterious person in a black hoodie who tried to break into the Hempergers' house.
 * Herbert (vocal effects by Frank Welker) - a hermit crab monster that Emily found and named. It looked like a normal hermit crab at first, but ended up growing up into its true form.
 * Christopher Tally (also voiced by Khary Payton) - a fifteen-year old athlete who tried to steal Melissa from Eric, but failed to win over her when Eric beats him in a basketball match.
 * Roger Roather (also voiced by Travis Willingham) - a crazy teenager who stalked Brittney.
 * David Poplawski/Llamy the Llama (voiced by Phil LaMarr) - a ghost of a man inside a llama costume who was once an actor of his show until he was kicked out.
 * The Cougarman (also voiced by Travis Willingham) - a cougar-like humanoid who attempted to kidnap Eric and Claire and eat them.
 * Ms. Dolofonia (also voiced by Candi Milo) - a woman who escaped jail and became a substitute teacher in an attempt to kidnap and torture the students.
 * Elizabeth the Shadow Girl (voiced by Mariel Sheets) - a shadow girl who devours living things like people, especially children and teens.
 * Carly (also voiced by Tara Strong) - a creepy little girl who threatens people if she doesn't get her way and is usually seen smirking.
 * The Spooker (voiced by Brian Doyle-Murray) - a giant creature who lurks around at night, especially during Halloween.
 * Mortimer Marlin/The Musical Monster (voiced by ) - a monster who disguised as a music teacher to lure the students into the middle of a forest. He also appears to enjoy music, considering that his name is "Musical Monster".
 * Ant I. Toon's Cartoons, consisting of:
 * Vacko (also voiced by Rob Paulsen) - a parody of Yakko Warner who is the leader of the cartoons.
 * Makko (also voiced by Jess Harnell) - a parody of Wakko Warner.
 * Jot (also voiced by Tress MacNeille) - a parody of Dot Warner.
 * Rooby-Duude (voiced by Frank Welker) - a parody of Scooby-Doo.
 * Ben (voiced by Billy West) - a parody of Ren Hoek.
 * Dippy the Dog (also voiced by Billy West) - a parody of Stimpy.
 * Deceleration Dimetrodon (also voiced by TBD) - a parody of Velocity.
 * Chuckie Blue (voiced by Zach Callison) - a parody of Charlie Brown.
 * Soupy (vocal effects by Dee Bradley Baker) - a parody of Snoopy.
 * Dacy Van Belt (voiced by Ariel Winter) - a parody of Lucy Van Pelt.
 * Edward Lightwoman (also voiced by Patrick Warburton) - a parody of Eric Cartman.
 * Lockear the Pirate Captain (also voiced by Carlos Alazraqui) - a parody of Popeye the Sailor.
 * The Red Elephant (voiced by Brad Garrett) - a parody of Pink Panther.
 * Death, Destruction and Dread (voiced by Cathy Cavadini, also by Tara Strong and also by Elizabeth Daily, respectively) - a parody of Blossom, Bubbles and Buttercup.
 * RockKevin RoundJeans (also voiced by Tom Kenny) - a parody of SpongeBob SquarePants.
 * Oswald Metson, Suzy Metson, and Andrew the Cat (voiced by Josh Keaton, Cissy Jones and Yuri Lowenthal, respectively) - a parody of Frank Woodson, Emma Woodson, and Tyler Macabre/Tyler the Cat.
 * Tom, Tomm, and Tommy (voiced by Bill Farmer, Tom Kenny, and Kyle Massey) - a parody of Ed, Edd, and Eddy.
 * Ian the Apple and Kyle the Banana (both voiced by James Arnold Taylor) - a parody of Bob the Tomato and Larry the Cucumber.
 * Isabelle Linwood (also voiced by Kath Soucie) - a parody of Miranda Phillips.
 * O-Greg (voiced by Jim Meskimen) - a parody of Implo.
 * Heart Ladybug (also voiced by Jessica DiCicco) - a parody of Star Butterfly.
 * The Creeper (voiced by TBD) - a strange creature who once kidnapped Emily.
 * Shadowrinna (voiced by Julie Nathanson) - a banshee who told Claire to do bad things, causing Claire to get in trouble.
 * The Cursed One (also voiced by Tom Kenny) - a tiny stickman from a cursed drawing that brings misfortune to anyone who comes across it.
 * Mystavros (also voiced by Kevin Michael Richardson) - a minotaur who spends its life in a hidden part of a forest.
 * Arcadius the Technoghost (also voiced by Mark Hamill) - a techno-ghost who has been trapped in an arcade for a couple of decades.
 * The Kiss Fairy (also voiced by Hynden Walch) - a sinister fairy who keeps her magic and powers by possessing a random newly kissed person to drain them of their love until she has her magic again.
 * The Strangon Wolfman (also voiced by Kevin Michael Richardson) - a ferocious wolfman who lurks around Strangon at the night of a full moon to cause chaos.
 * Richard Montez (voiced by ) - an outcast who's been humiliated and gets his revenge by pranking the entire school.
 * Alexandra (also voiced by Erica Lindbeck) - a siren who attempted to lure Brandon into his doom.
 * The Lizardman Tribe, consisting of:
 * Lycron (voiced by Robin Atkin Downes) - a bulky lizard man who is the leader of the tribe.
 * Lizuku (voiced by Jim Meskimen) - a small lizard man who is Lycron's assistant and second-in-command.
 * The Other Members (voiced by Rob Paulsen, Dee Bradley Baker and Fred Tatasciore) - other unnamed lizardmen who are part of the tribe.
 * Plaire (voiced by Tom Scharpling) - a wood-like creature who used his human disguise to enter the school and had people make friends with him, though it is revealed he is doing it to drain their souls in order to become stronger.
 * Nathan Bugof (voiced by ) - an insect-obsessed nerd who challenged Eric and Claire to an insect battle.
 * Jasmine (voiced by Allison Janney as an adult and Rachael MacFarlane as a child/teenager) - an ugly woman who is a librarian and was a bully to Elsa McEdderson back when they were kids.
 * Gloria the Ghost Witch (also voiced by Erica Lindbeck) - a ghost witch who tried to sabotage the town she lives in with her dark magic.
 * The Gigaroach (vocal effects by Frank Welker) - a creepy oversized cockroach who attacks other organisms and eats them, especially humans, being the main antagonist of The Gigaroach.
 * Astra the Ghoul (also voiced by Kari Wahlgren) - a ghoul who met Claire and constantly bullied her.
 * The Road Beast (vocal effects by Fred Tatasciore) - an odd beast that has been spotted around various roads in Strangon.
 * Jason (also voiced by Billy West) - a student from Brittney's grade who is obsessed with the supernatural and suspects Claire of being a ghost.
 * Waltza (voiced by Christian Borle) - a ghost that has the ability to turn people into dancing slaves.
 * Clifford Shatal (voiced by Christian Slater) - a cunning supernatural figure disguised as an ordinary man who wants to kidnap humans.
 * Betsy and Jane (voiced by Lara Jill Miller and Lacey Chabert, respectively) - two ditzy fairy sisters who are assigned to do Clifford's tasks, but fail due to their ditziness and clumsiness.
 * The Children of the Dark Moon, consisting of:
 * Gerald (voiced by TBD) - a creepy 11-year old child who is the de facto leader of the children.
 * Cherry (voiced by Olivia Hack) - a shy yet creepy 12-year old girl who is the second in command of the children.
 * Chuck (voiced by TBD) - a creepy 10-year old boy who doesn't talk yet is very loyal to Gerald.
 * Izy (voiced by TBD) - a creepy 9-year old who is eager to summon the creature under the dark moon.
 * Dolores (also voiced by Erica Lindbeck) - a strange teenage girl who is able to sneak into people's homes without them knowing.
 * The Mall Watcher (voiced by Xander Mobus) - a creepy ghost-like creature who stalks people at the mall.
 * Francine (voiced by TBD) - a beautiful yet obsessive French exchange student who tried to get Eric for herself.
 * Kyle Green (voiced by TBD) - a cocky teenager who prefers to have fun and go to parties rather than study for his tests.
 * The Banana Tribe, consisting of:
 * Ballard Andrewson (voiced by TBD) - an insane man who leads the Banana Tribe and worships a being he and his tribe call the Mighty Banana.
 * Annabelle Alexander (voiced by TBD) - a weird woman who doesn't actually know what she's doing and is only in the tribe because one of her friends is part of it.
 * Jenny (voiced by TBD) - a creepy teenage girl who has been trying to marry Eric despite him already having Melissa.
 * The Lady In Red (voiced by TBD) - a terrifying undead young woman dressed in red who drags those who trespass her mansion to eternal pain and suffering, attempting to do the same with Eric and Claire until being defeated by the latter.
 * The Lady In Red (voiced by TBD) - a terrifying undead young woman dressed in red who drags those who trespass her mansion to eternal pain and suffering, attempting to do the same with Eric and Claire until being defeated by the latter.

Episodes
See List of Eric and Claire episodes.

Crossovers
See The Cryptids, Eric, and Claire and Out of Normal Activity.

Graphic novel series
See Eric and Claire (graphic novel series).

Spin-off
See Eric and Claire: Stories.

Animation
The animation for the series is outsourced to Rough Draft Studios in Seoul, South Korea.

Critical response
This show has received generally favorable reviews from critics, while highly positive from viewers and fans alike, being praised for TBD. It received an 8.1/10 on IMDB, an 83 on Metacritic, and 3 out of 5 stars on Common Sense Media.

International titles

 * Spanish: Eric y Claire
 * French: Eric et Claire
 * Italian and Portuguese: Eric e Claire
 * German: Eric und Claire
 * Russian: Эрик и Клэр
 * Japanese: エリックとクレア
 * Korean: 에릭과 클레어
 * Greek: Eric και Claire
 * Cantonese: 埃里克和克萊爾
 * Norwegian: Eric og Claire
 * Finnish: Eric ja Claire
 * Swedish: Eric och Claire
 * Polish: Eric i Claire

Legacy
Dark Spirits and Me featured Hermit Crab Havoc in one scene.

Broadcast
The series first made its way on Cartoon Network on October 27th, 2016.

In Canada, it premiered on Canadian version of Cartoon Network and Teletoon on October 31st and November 28th, respectively. In LA and Brazil, it premiered on Cartoon Network Latin America on December 5th. It premiered on December 26th on the UK and Irish versions of Cartoon Network while it premiered on January 23th, 2017 on Germany, Northern, Central, Southeast and Eastern Europe, and Russia's versions of CN respectively. It premiered on January 27th, 2017 in Portugal while it premiered on February 27th, 2017 in the Netherlands while also premiering on Spain's Boing and Turkey's version of CN on April 24th, 2017. It premiered in Africa and Australia's version of CN on February 4th, 2017 and March 25th, 2017 respectively, with premiering on Philippines' version of CN on the same day as the latter's. It premiered in South Korea's version of CN on March 20th, 2017 while premiering on Southeast Asia's version of CN on April 8th, 2017. It then premiered on Cartoon Network Japan on September 24th, 2017.

The series was available from streaming on Hulu from December 8th, 2017 until it moved to HBO Max on May 27th, 2020.

Merchandise
See Eric and Claire/Merchandise.

Mobile app
See Eric and Claire: G.R.U.B. Club.

Video games
See Eric and Claire: Monster Havoc and Eric and Claire: Red Moon Ravagers.

Tropes
See Eric and Claire/Tropes.

Easter eggs/cameos
This series features Easter eggs of several Cartoon Network shows. For example:
 * In Hermit Crab Havoc, while Claire was reading a book, a demon similar to Aku from Samurai Jack can be seen on one of the pages.
 * In the same episode, a clip of a Regular Show episode was briefly seen on the television.
 * In a flashback in Merry Christmas!, kids similar to Robin Snyder, Mitch Mitchelson, Elmer Sglue, Harry Pitt and Mike Believe from The Powerpuff Girls were seen in the mall in Claire's flashback.
 * In George Duck, George shows Eric pictures of what he was doing after he escaped from the lab he was in. One of them showed Chupacabra chasing him, and Eric responds, "Wait... doesn't he look familiar?", referencing to The Cryptids and the crossover the show and Eric and Claire had.
 * In Return of the Spooker, a broken frame with the Grim Reaper from The Grim Adventures of Billy and Mandy can be seen in a trash can.
 * In the same episode, there is another Billy and Mandy reference, where we see Claire try out what appears to be a costume of Billy.
 * In Ghost-Napped, dolls similar to Princess Bubblegum, Marceline and Flame Princess from Adventure Time were seen on the floor.
 * In Internet Screamer, an action figure resembling Zoko from Mythical can be briefly seen.

Trivia

 * Eric and Claire takes place in a fictional city of Strangon, Ohio.
 * The only characters who know about Claire actually being a ghost and not a regular human besides Eric are Brandon and Michael, but as time goes on, more people start finding out, for example:
 * Llamy the Llama in Llamy the Llama.
 * The Cougarman in The Cougarman of Strangon
 * The Cryptids, Dr. Turbo, and Angel the Bald Eagle in the crossover special, The Cryptids, Eric, and Claire.
 * Elizabeth in The New "Friend".
 * Madame Freakshow, her sidekicks, and the Spider Thing in Carnival Paranormal.
 * Emily McEdderson (though she forgot about it after being knocked out) also in Carnival Paranormal.
 * George Duck in George Duck.
 * Emily McEdderson (again; this time didn't end up forgetting about it) in Emily and Claire.
 * A bunch of baby humans in Truth or Dare, including the baby from Eric, Claire and Some Baby.
 * Melissa in The Kiss Fairy.
 * The S.N.D. Gang in The S.N.D. Gang.
 * Ivy in The Goth Girl.
 * The Musical Monster, The Cursed One and Herbert in The Anti-Claire Bunch.
 * Jessica in Jessica.
 * The Woodson siblings, Tyler, Julia, Professor Woodson, Tiffany, and Ghostly in Out of Normal Activity.
 * Madame Freakshow is claimed as Eric and Claire's arch-enemy starting from "Carnival Paranormal", though before that episode, it was Brody and his gang that were their main arch-enemies.
 * Darren Criss is a special guest star for his portrayal of The Music Monster from High School Not-So Musical.
 * About a month later, another special guest star, "Weird Al" Yankovic, appeared to portray as Tiny.
 * There were rumors on the internet that unlike Season 1, Season 2 will become more gruesome, horrific and graphic, so much compared to a horror film, that it'll move from Cartoon Network to Adult Swim with TV-14 (or even TV-MA) episodes. However, the creator responded to the rumor saying it's false.
 * Dolofonia in Ms. Dolofonia's name is actually Greek for "Murder".
 * Christopher Tally went through some changes in the show. Originally, he was gonna be an anthropomorphic shark that was turned into one by Michael's experiment back when he was a human. Next, he was changed into an anthropomorphic bulldog. Then, he was changed into a human like he is now, but was originally gonna be one of Eric's friends and one of the main characters, but finally, he was changed into a recurring character and overall the main antagonist in The Chick for Christopher.
 * Eric McEdderson was originally gonna be named "Edward McEdderson" and the show was supposed to be called "Edward and Claire".
 * The character, Jason Badluckpants, was originally intended to be a real life antagonist until Craig decided that he fits more as a fictional character in Polly and Horsey.
 * VARIANT:
 * Cartoon Network Studios: the logo shows Claire sneaking up on Eric and scaring him, as Claire then chuckles while Eric glares at her.