Rolf Harris (1930-2023) was an Australian television personality, musician, and artist.
Harris shared a 1978 episode of Parkinson with Jim Henson, Frank Oz, and the Muppets. Late into the Muppets' feature, Harris sings a variation of "Froggy Went A Courtin'" with Kermit. He later voiced a Creature Shop koala in a 1987 Qantas commercial.
His 1957 song "Tie Me Kangaroo Down, Sport" was also covered on The Muppet Show.