Kermit the Frog is puppeteer Jim Henson's most famous Muppet creation, first introduced in 1955. He is the main protagonist of many Muppet projects, most notably as the host of The Muppet Show, and has appeared in various sketches on Sesame Street, in commercials and in public service announcements over the years. Kermit was performed by Henson until his death in 1990. Since then, Kermit has been performed by Steve Whitmire.
A slang term for licking toad in "Let's Go to the Hop" is "Doing Kermit".
In "Stewie Loves Lois", a cutaway gag shows an African-American man lost in Kermit's swamp and asks him if he knows how to get to town. Kermit tells him it's back the way he came and pulls out a rifle, about to fire.
Kermit portrays himself in live-action in a screen test for the movie Philadelphia in Family Guy Presents: Seth & Alex's Almost Live Comedy Show.
He is used as an example of a Muppet who hasn't sounded the same since Henson's death in "The Tan Aquatic with Steve Zissou".
In "Chap Stewie", Stewie takes Kermit's place in the bicycle riding scene in The Muppet Movie.
In most of his animated appearances, Seth MacFarlane voiced him, but in "Deep Throats" he was voiced by Frank Welker who had previously voiced the character in Muppet Babies. In "The Tan Aquatic with Steve Zissou", he was voiced by John Viener.
When Brian tries to point out to Stewie that it isn't easy to work with an ex in "The Boys in the Band", a cutaway gag shows Scooter asking Miss Piggy about calling in sick the previous day. As she brushes it off with humor about having a "frog in her throat" while giving Kermit the Frog a poke in the ribs, he tiredly suggests she quit drinking.
- FG302 "Brian Does Hollywood" (As stuffed toy with Miss Piggy)
- FG423:"Deep Throats"
- FG501 "Stewie Loves Lois"
- FG502 "Mother Tucker"
- FG511 "The Tan Aquatic with Steve Zissou"
- FG909 "And I'm Joyce Kinney"
- FG1207 "In Harmony's Way"
- FG1501 "The Boys in the Band"