|Friends:||Flem, Earl, Red Guy (Sometimes), The Powerpuff Girls|
|First Appearance:||No Smoking|
Chicken, (voiced by Charlie Adler), is one of the two main characters in Cow and Chicken Cow's 11 year old 5th Grade chicken brother. He can be mean to his younger sister, and even to the rest of the family. He Is In The Same 5th Grade Class as Flem And Earl. He has a powerful ego, but in spite of this, has a powerful conscience, usually only displayed when Cow is in danger, as well as being more intelligent (and sane) than most characters, and his selfish actions can actually come to others help.
An example of all these can be found in the episode "Comet!", where Chicken was the only one who walked normally (the other characters followed the Red Guy by using their buttocks instead of their legs), and later Chicken tricked all the others in belief that a deadly comet was coming to smash them all and sold "Shields" (rather cheap gadgets) to them, but after he witnessed Cow's farewell to her toys, Chicken felt guilty and confessed the scam. However, when a real deadly (but small) comet arrived, Chicken's protections actually worked and he was forgiven for his prank.
His speech is riddled with malapropisms and sarcasm. Despite being a male, he demonstrated the ability to lay eggs. Like other chickens, he cannot fly, and is afraid of flying. Chicken is the only character in the show who knows that his sister and Supercow are the same person. Mostly Chicken calls Cow by the name stupid. Despite his name, Chicken resembles more of a rooster including a wattle.
- He is also shown in the episode "The Bad News Plastic Surgeons" to have high skills in Plastic Surgery.
- In the episode "Cow's Magic Blanket," Chicken even once turned into his own alter ego, calling himself Wonder Wattle to save his sister. Where as Supercow speaks fluent Spanish, Chicken required the help of a Spanish dictionary.
- Chicken's favorite color is blue.
- Chicken is very fond of ice skating.
- Chicken is more strict.
- He has an uncle named professor steer.
- He has a cousin named Sow.
- He has a cousin named boneless chicken.
- He is in 6th grade.
- In the episode "Happy Meat" it is revealed that Chicken's grandfather was a human, and his grandmother was a chicken.
- Chicken has spoke in three episodes of I Am Weasel: "Who Rubbed Out Cow and Chicken?", "The Wrong Bros", and "Back to School".