Kermit the Frog is puppeteer Jim Henson's most famous Muppet creation,[1] first introduced in 1955. He is the protagonist of many Muppet projects, most notably on The Muppet Show, and Sesame Street, as well as movies, specials, and public service announcements throughout the years. Kermit's iconic look and voice have been recognizable worldwide since, and in 2006, the character was credited as the author of Before You Leap: A Frog's Eye View of Life's Greatest Lessons, which is an "autobiography" told from the perspective of the character himself.

Michigan J. Frog is an animated cartoon character who debuted in the Looney Tunes cartoon One Froggy Evening (December 31, 1955), written by Michael Maltese and directed by Chuck Jones. In this cartoon, Michigan is a male frog who wears a top hat, carries a cane, sings pop music, ragtime, Tin Pan Alley hits, and other songs from the late 19th and early 20th century while dancing and performing acrobatics in the style of early 20th century vaudeville. He appeared in a later cartoon titled Another Froggy Evening which was released on October 6, 1995.