Dipsy

One of the four characters in the television show Teletubbies was green.

He was featured in one episode, where the other Teletubbies, including a purple one, a red one, and a yellow one, gathered around the television on his stomach, which depicted a group of children. (TV: The Sound of Drums)

Behind the scenes
Although he went unnamed in TV: The Sound of Drums, the character's name is Dipsy.