Kermit the Frog was one of Jim Henson's most famous muppet creations (voiced by Henson himself). Kermit was a character on Sesame Street, often as a news reporter. One of his most memorable works was the song, "It's not easy being green".
Kermit was front "man" to The Muppet Show and the long suffering stage manager for The Muppet Show. He continually struggled to produce a quality program, for a sparse and disaffected audience. Kermit also appeared in several Muppet movies and spin-off series.