Brothers and Monsters

 is an American animated supernatural comedy television series created by Matt Youngberg, being produced by Nickelodeon Animation Studios and aired on Nickelodeon from March 5th, 2004 until December 11th, 2009.

Synopsis
Three brothers encounter a monster that is able to take them through its dimension where his monster friends hang out in, as they get into various situations.

Main

 * Dave (voiced by Michael Rosenbaum) - a 17-year old teenage boy who is tough and athletic, though somewhat immature.
 * Kurt (voiced by Quinton Flynn) - a 14-year old teenage boy who is overweight and is rather lazy, as he also enjoys violent video games and movies.
 * Stan (voiced by Grey Griffin) - a 7-year old little boy who is rather awkward and tends to be the smartest out of the three.
 * Squints (voiced by John DiMaggio) - a goblin who loves to play around, and was the one who encountered the three brothers and is able to take them to his home dimension.

Supporting

 * Slim (voiced by Rodger Bumpass) - a chill slime monster who has been best friends with Squints since elementary school.
 * Daniel and Jeanette (voiced by Corey Burton and Tress MacNeille, respectively) - Dave, Kurt, and Stan's parents, in which the former is chill and optimistic while the latter tends to be paranoid and can sometimes worry excessively about her children.
 * Bobby (voiced by Scott Menville) - Dave, Kurt and Stan's cousin from Scandinavia.
 * Patricia (voiced by Ashley Johnson) - a skater girl who Dave is enamored with as she loves to do things boys do like skating and dislikes fashion and other girly stuff.
 * Samantha (voiced by Jennifer Hale) - a teenage girl who is a friend of Dave, Kurt, Stan, and Squints. She was thought to be a normal girl at first until they discover that she hails from a family of witches. Throughout the show, there were hints that she and Kurt may have a thing for each other.
 * Jacqueline (also voiced by Grey Griffin) - a teenage girl who has mastered every type of martial arts and uses her skills to defend those who cannot defend themselves. Stan has been revealed to have a secret crush on her.
 * Squeal Clawsby (voiced by Khary Payton) - the host of The Squeal Clawsby Show who is extremely weird and eccentric.
 * Betsy Clawsby (voiced by Kimberly Brooks) - Squeal's friendly and naïve daughter who is very friendly and goofy.
 * Radical the Iguana (voiced by Jaleel White) - a cool iguana who, despite going to school, does cool stuff like skateboarding and even graffiti. He is the main character of Dave's favorite childhood show, Radical the Iguana.
 * Joan and Johanna (both voiced by Nika Futterman) - a two-headed monster who often bicker at each other.
 * The Closeted Skeleton (voiced by TBD) - a living skeleton who wouldn't come out of his closet.
 * The Imp (voiced by André Sogliuzzo) - a charismatic imp who likes to hang out in closets.
 * Sofia (voiced by TBD) - a shy and lonely little girl who grew fond of Stan since he saved her from a group of ghouls as CatStan.
 * Fogbreath (also voiced by John DiMaggio) - a large creature that can breathe fog.
 * Modulus (voiced by David Kaye) - a muscular ogre who has a substance that can make someone very beautiful or handsome, although the effects would ware off after 8 hours.
 * Damon (voiced by TBD) - a stubborn and tough monster who prefers to work by himself, but does have a heart to those that heal him.
 * Josie (voiced by TBD) - a feisty yet caring werecat who resides in the Ranch in Space and is against Sir's plans.
 * Dora (voiced by Laura Ortiz) - a dryad who is the protector of a forest in Squints' dimension and will turn anyone who has bad intentions for it into a mindless tree.
 * Hannah (voiced by TBD) - TBD
 * Daisy (voiced by TBD) - a five-foot living doll who Dave, Kurt, Stan and Squints were afraid of at first, but has turned out to be very kind, as she's willing to help anyone in need, although her ability to talk was supposed to be kept secret.
 * Ellie (voiced by Tara Strong) - an elf who is an introvert and dislikes being with people, though her personality can change whenever she hears the word, "change."
 * The Cartooniverse Citizens, consisting of:
 * Narla (voiced by TBD) - a nerdy yet cynical teenage girl who gets pretty annoyed by other teenagers around her.
 * Lander and Gobbles (voiced by TBD and TBD, respectively) - a cunning and mischievous Husky and an easily angered yet stupid turky who are friends with each other as they often get into situations with each other.
 * Skeet the Swifter (voiced by TBD) - a rough yet caring teenager who has the ability to run as fast as a cheetah.
 * Samuel the Steam Train (voiced by TBD) - a cocky talking steam engine who wants to prove the other trains that he can do a lot better than them.
 * PineDan ConeLegs and Thomas Rock (voiced by TBD and TBD, respectively) - a optimistic pine cone and a dimwitted rock who likes to create Brownie Sandwiches and catch bugs, while they unintentionally cause chaos.
 * Clay Gatchu and Rezapu (voiced by TBD and vocal effects by TBD, respectively) - an eager young boy and his rabbit-like pocket creature who roam around to catch other pocket creatures.
 * Deng (voiced by TBD) - a spunky yet goofy young boy who has the amazing ability to control elements such as fire, water, electricity, etc.
 * Ninja Jake (voiced by TBD) - a feisty and skilled ninja who was on a mission to defeat a giant demon who destroyed his hometown.
 * Albert Proton (voiced by TBD) - a highly intelligent little boy who has been able to create inventions and experiments yet they tend to go wrong, usually thanks to someone screwing them up.
 * Lucas and Lucky (voiced by TBD and vocal effects by TBD, respectively) - a gloomy goth little boy and his cheerful ghost dog who often hang out with each other.
 * Lily Lillian and Charlie the Large Orange Wolf (voiced by TBD and vocal effects by TBD, respectively) - a courageous and caring little girl and her loyal giant orange wolf who like to walk around the forest as Lily treats Charlie as a dog rather than wolf.
 * Dahlia, Daisy, and Delphine (voiced by TBD, TBD, and TBD, respectively) - a calm and intelligent, friendly and ditzy, and short-tempered and rowdy trio of little girls who are sisters as they seem to be completely normal, yet they all turn out to have superpowers.
 * Hailey the Swamp Woman (voiced by Kate McKinnon) - a woman who lives in a supernatural swamp as she is unaware of whatever exists in what she calls the "land livers world".
 * Kaylia (also voiced by Grey DeLisle) - a mysterious shy slug-like monster creature who has been hiding in the dark.
 * Mickie the Clown (voiced by TBD) - a goofy clown who enjoys entertaining kids at various events, especially birthday parties, yet was scared of Dave as a child due to his rowdiness and mischievous attitude, and still is to this day.
 * Bobby New (voiced by Daran Norris) - a news reporter who is famous in the city Dave, Kurt, and Stan lives in and talks about several random things.
 * Future Dave (also voiced by Corey Burton) - an extremely old and senile version of Dave from the future as he met his past self once.
 * Dummy (voiced by TBD) - a stupid and dimwitted monster who usually annoys most monsters.
 * Clarke (voiced by TBD) - TBD

Revival-exclusive

 * Jenny Excess (voiced by TBD) - a fictional energetic teenage girl who loves to drink as much energy drinks as she can as she is the mascot of TBD.

Antagonists

 * The Red Witch (voiced by Jill Talley) - a young and vicious witch who is rather infamous in Squints' home dimension for her acts as she tries to destroy Squints and the other monsters there, including Dave, Kurt, and Stan.
 * Farmer Frank (voiced by TBD) - an insane farmer spirit who will harvest bodies of anyone who goes near his farm.
 * The Ferocious Freaks, consisting of:
 * Darkfang (voiced by TBD) - a vicious, fanged, dark-furred boar-like creature who is the leader of his gang.
 * Stinkmore (voiced by TBD) - a stinky stinkbug who uses his own odor as a weapon.
 * Isabella the Menace (also voiced by Grey Griffin) - a female shadowy figure who is rather silent and is pretty clever, being the only female in the group.
 * Woodface (voiced by TBD) - a creepy figure with his face made out of wood who is rather insane.
 * Velvet Skull (voiced by TBD) - a short-tempered, scarlet-colored living skeleton who is the laughing stock of the group and is the one who causes them to screw up.
 * Flicky (voiced by TBD) - a creepy firefly-like creature who is extremely weird and goofy.
 * The Gold Specter (voiced by Tom Kenny) - a ghost made out of pure gold who loves to haunt people.
 * Jane (voiced by Debi Derryberry) - an insane teenage girl who had a creepy crush on Dave and stalked him.
 * The Sasquatch (vocal effects by Frank Welker) - a malicious sasquatch who has been terrorizing campers.
 * Xorlopsisus (voiced by Jeffrey Combs) - a talking giant squid-like monster which Dave accidentally reeled up and has kidnapped and attempted to eat him out of anger.
 * Fritz (voiced by James Hong) - a creepy and offputting tanuki who is obsessed with women and wants a beautiful body so he can eat.
 * Martha and Jacob Crawley (voiced by TBD and TBD, respectively) - TBD
 * Paste Pedro (voiced by TBD) - a weird and eccentric criminal that is made out of paste.
 * The White Witch (voiced by Susanne Blakeslee) - a powerful witch who is dressed in white and has an arsenal of magic, as she befriended the Red Witch.
 * Lorelei (voiced by TBD) - a kitsune who entered Patricia's body to cause chaos.
 * Beasticus (voiced by Danny Cooksey) - a man from Europe who was trapped in the monster dimension and after an incident with some supernatural trolls, he stole a potion and drank it to make him more powerful and is now out to slay all monsters, including Squints.
 * Sir (voiced by TBD) - the corrupt head of the Ranch in Space who is very insane and mad.
 * X-12 (voiced by TBD) - Sir's assistant who helps run the Ranch in Space.
 * Mayumi Mazina (voiced by Kira Buckland) - an anime main character who got turned to life and began causing chaos.
 * The Terror Woods Slasher (voiced by Tom Kane) - a mythical slasher who roams in the forest that people call The Terror Woods. He was thought to be a rumor made up to scare people at first, but he soon turned out to be real.
 * Poultry-Geist (voiced by Charlie Adler) - a ghost chicken who loves to haunt things for the sake of torment. He was revealed to be Squints' arch-rival ever since elementary school.
 * Prince V (voiced by TBD) - the rowdy and arrogant prince of parties who brainwashed Dave and Patricia to forever want to party in his party realm.
 * Angelica Paine (voiced by TBD) - TBD
 * Mara (voiced by TBD) - a seemingly sweet and innocent teenage girl who Dave had a crush on until she revealed herself as a malicious mermaid who wanted to eat him.
 * Windego (voiced by Robert Englund) - a creepy wind monster who kidnaps other monsters and people.
 * Dan/DuperDan (voiced by TBD) - TBD
 * Slip and Slide (voiced by TBD and TBD, respectively) - two water demons who see themselves as superior towards each other.
 * The Insect Queen (voiced by TBD) - a normal woman who gained psychic control of insects and soon grew hungry for power.
 * The Mind Worms (vocal effects by TBD) - two terrifying worm creatures who have gotten inside Dave and Patricia and controlled them into becoming extremely rebellious people who want to overthrow the government.
 * Stick and Stone (voiced by TBD and TBD, respectively) - two twins who are made out of sticks and stones and like to cause chaos.
 * Ian (voiced by TBD) - a cynical little gothic boy who often communicates with the dead and is feared by his own siblings.
 * Dukeasaur (voiced by Nolan North) - a tyrannosaurus rex-like monster who wrecked havoc to the monster world.
 * Stacy (voiced by TBD) - a teenage girl who is new to Dave and Kurt's school, yet is revealed to be an energy stealing monster.
 * The Cthulhu (voiced by TBD) - a cthulhu who is the champion of the Go' Fish games in the monster world.
 * Claude (voiced by Kevin Michael Richardson) - an African-American six-year old mad scientist who is a genius and attempts to make Stan look like a failure while also planning on using his inventions to brainwash his classmates to do what he wants them to do.
 * Hailey (voiced by TBD) - a mysterious teenager who has the ability to turn the tattoos on her body into real things.
 * Red King (voiced by ) - a king of a small kingdom who is cold and distant.
 * The Red Warriors (voiced by TBD, TBD, and TBD) - a group of warriors led by Red King who are extremely hostile to intruders.
 * The Pink Warrior (voiced by Angela Kinsey) - a female warrior who wanted to wear pink instead of red for no reason.
 * Thagor (also voiced by Kevin Michael Richardson) - a giant brutish rock golem who is the champion of an arena and is capable of taking down twenty adults.
 * Vampdogs (vocal effects by Dee Bradley Baker) - several breeds of dogs that are vampiric and are just as blood thirsty as regular vampires.
 * The Swamp Pig (vocal effects by Fred Tatasciore) - an aggressive pig with swamp traits who came from a swamp, and budges in everyone, even eating the stolen food.
 * Tiffany (also voiced by Tress MacNeille) - a goblin who Squints fell in love with, but is secretly evil.
 * Mr. Kile (voiced by Martin Jarvis) - a strange and offputting human who is Dave's substitute teacher and has been trying to hide the fact that he is an alien.
 * Fright Matt (voiced by TBD) - a goofy teenager who disguised himself as a terrifying, nightmare-causing monster to scare people just for the fun of it.
 * Hot Dog Behemoth (vocal effects by Frank Welker) - a collection of living hot dogs that combine themselves into a shapeshifting monster.
 * Sock Kurt (also voiced by Quinton Flynn) - a creepy sock-like monster who takes the form of Kurt and stalks people.
 * Wacky (voiced by TBD) - a plush that came to life who tries to beat people up, but ends up not hurting them due to him being a plush.
 * Crazy Daisy (voiced by TBD) - an insane teenage ghoul-like creature who is into Kurt and has tried to kidnap him so she could date him later.
 * The Blue King (voiced by Tim Curry) - the Red King's brother who believes that he is better than him.
 * Red Claw (voiced by TBD) - a giant primitive werebear who is very rude and loves to eat stuff, mainly humans.
 * The Mirror People, evil versions of various good people. Consisting of:
 * The Snake Gods, a bunch of evil snakes who believe they are gods, consisting of:
 * Slitherus (voiced by TBD) - the extremely greedy and egotistical leader of the Snake Gods.
 * Slurpius (voiced by TBD) - an insane member of the Snake Gods who likes torture.
 * Connie (voiced by TBD) - TBD
 * The Batrilla (vocal effects by TBD) - TBD
 * The Batrilla (vocal effects by TBD) - TBD

Revival
On December 14th, 2020, it has been announced that Brothers and Monsters will be extended to a couple new seasons as a result of the success of Inside the Terrorland. It's been revealed that episodes for the revival were silently produced prior to the release of the movie and is expected to premiere in the Summer of 2021.

A first look of it was revealed on March 12th, 2021, as six days later, during the Nickelodeon Upfront, it has been revealed that the revival is set to premiere in June.

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

Episodes
See List of Brothers and Monsters episodes.

Video game
See Brothers and Monsters: Monster Mania.

Revival movie
See Brothers and Monsters: Inside the Terrorland.

Comic book revival
See Brothers and Monsters at Last.

Tropes
See /Tropes.