1 Disco Stu (The Simpsons)
2 Charles Chicken (Foster's Home for Imaginary Friends)
3 Michael (Don't Hug Me I'm Scared)
4 Itchy (The Simpsons)
It's pretty crazy but it's a winner
5 Jerry (Tom and Jerry)
Jerry Mouse is a fictional character and one of the title characters in Metro-Goldwyn-Mayer's series of Tom and Jerry theatrical cartoon short films. He is a mouse that gets chased by Tom, but tries to trick him so he won't catch him .
For me crazier is the cat
6 Ren Hoek (Ren & Stimpy)
7 Stone Cold (WWE Slam City)
By all accounts, he is crazy
8 Izzy (Total Drama)
9 Luan Loud (The Loud House)
Luan Loud is a main character in The Loud House.
Luan is the fourth-oldest child in the Loud family and second youngest of the five older sisters, at 14 years old. Her most annoying habit is telling bad jokes and puns and pulling pranks.
Espically on April Fool's Day where she cranks up the craziness. - egnomac
10 Fanboy (Fanboy and Chum Chum)
11 The Red Guy (Cow & Chicken)
12 Professor Flan (Fanboy and Chum Chum)
13 Mabel Pines (Gravity Falls)
Mabel Pines is one of the lead characters of the Disney XD animated series Gravity Falls. The character is voiced by Kristen Schaal, and designed by the series creator, Alex Hirsch. She is inspired by Hirsch's own twin sister, Ariel Hirsch. She is a caring, boy-crazy 12 year old girl that moved to the ...read more.
14 Woody Woodpecker (The Woody Woodpecker Show)
Woody Woodpecker is an anthropomorphic animated woodpecker, inspired by the acorn woodpecker and also resembling the pileated woodpecker, who appeared in theatrical short films produced by the Walter Lantz animation studio and distributed by Universal Pictures.
15 Daffy Duck
Daffy Duck is an animated cartoon character produced by Warner Bros. Styled as an anthropomorphic black duck, the character has appeared in cartoon series such as Looney Tunes and Merrie Melodies, where he usually has been depicted as the best friend and occasional arch-rival of Bugs Bunny.
16 Chum Chum (Fanboy and Chum Chum)
17 Bessie Hickenbottom (The Mighty B)
18 Stewie Griffin (Family Guy)
Stewart Gilligan "Stewie" Griffin is a main character from the animated television series Family Guy. Obsessed with violence and matricide, Stewie is the youngest child of Peter and Lois Griffin, and the brother of Meg and Chris Griffin.
19 The Rat King (Teenage Mutant Ninja Turtles)
20 Mr. Whiskers (Brandy And Mr. Whiskers)
21 Drew Pickles (Rugrats)
22 Kodos (The Simpsons)
23 Miss. Fowl (The Adventures of Jimmy Neutron Boy Genius)
24 Qui Gon Jinn (Lego The Yoda Chronicles)
25 Jason (The Crack)
26 Elmer (The Fairly Odd Parents)
27 Tom (Tom & Jerry)
Thomas "Tom" Cat is a fictional character and one of the title characters in Metro-Goldwyn-Mayer's series of Tom and Jerry theatrical cartoon short films.
28 Stu Pickles (Rugrats)
29 Jack Lassen (The Simpsons)
30 Filbert (Rocko's Modern Life)
31 Beavis (Beavis & Butthead)
Beavis is a fictional character. He is one of the young teenaged protagonists on the MTV animated series Beavis and Butt-head.
32 Heffer Wolfe (Rocko's Modern Life)
Heffer Wolfe is a fictional character on the cartoon Rocko's Modern Life and the comic book series of the same name.
33 Edward Bighead (Rocko's Modern Life)
34 Carl (Llamas with Hats)
HAA! I laugh every single time this guys comes on screen. He is funny.
35 The April Fool (Fairly Odd Parents)
36 Juuzou Suzuya (Tokyo Ghoul)
He is in an anime but the last time I checked that counts. He is so insane since he puts stitches in himself just to pick them out