Kermit was one of the original Muppet characters on Sesame Street. Though he was intended to be removed from the cast after the first season, he returned as a full-time character in the third, and remained a regular character for many years. Closely identified with the show, he often appeared as an easily frustrated lecturer, a straight man to the humorous antics of another Muppet, or a news reporter interviewing storybook characters for Sesame Street News. He most often interacted with Grover and, to a slightly lesser extent, Cookie Monster. The various songs he sang on Sesame Street tended to be meaningful in nature, most memorably his song "Bein' Green".
Following the death of Jim Henson, Kermit was used less frequently on Sesame Street, but still made new appearances until 2001. Unlike the rest of the show's Muppets, he was not created for the exclusive use of Sesame Workshop, and has rarely been a part of the show's merchandise. All Muppet characters originally belonged to the Jim Henson Company, but when the opportunity came for Sesame Workshop to buy its characters for $180 million, Kermit was not included in the deal.