Gonzo's family look somewhat like him but they have different shapes of noses and hair. One of the named members of Gonzo's family is Ubergonzo. Gonzo played the Tin Thing in The Muppets' Wizard of Oz. In the Muppet movies and TV series Gonzo appears with Rizzo the Rat very frequently.
Gonzo and Rizzo
Beginning with the 1992 movie The Muppet Christmas Carol, Gonzo has been paired with Rizzo the Rat, who has since become his best friend. The two co-hosted The Muppet Christmas Carol (Gonzo as Charles Dickens and Rizzo as himself). The team connected with audiences, and Gonzo and Rizzo continued to be paired (often as the stars of the show) throughout the 1990s. Gonzo and Rizzo appeared as a team in Muppet Treasure Island (1997). The two, as a pair, hosted Muppet Classic Theater (1997). And Gonzo and Rizzo were teamed together for most of Muppets from Space (1999), in which they starred. It was shown that the two are roommates in The Muppet Boarding House. In episode 104 of Muppets Tonight, they hosted a one-shot segment called "Gonzo and Rizzo's Incredible Discoveries". The segment focused on what happens after a series of painful circumstances (Rizzo gives them all the same response: "It hurts!").
Their most recent appearance together was on the album A Green and Red Christmas, where they sang "It's the Most Wonderful Time of the Year" together. They also sang "Mr. Spaceman" with Jimmy Buffet, on the Kermit Unpigged album.