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.
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.
To celebrate his return to the show, Peter gives Chris a t-shirt with Kermit on it in "Inside Family Guy".
When a disabled student named 'Kermit Legs' Kyle is named King of the James Woods Regional High School prom in "No Giggity, No Doubt", another student with a Kermit head is disappointed after thinking he was close to winning.
In "You Can't Handle the Booth!", Peter identifies the piano melody playing as an homage to a classic song from The Muppet Show, sung by Kermit's nephew, Robin.
- 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"
- FG1504 "Inside Family Guy"
- FG1715 "No Giggity, No Doubt"