The Fabulous Kangaroos is a former professional wrestling tag team that existed in various forms from 1957 until 1983. The first incarnation of The Fabulous Kangaroos was formed when Italian Australian Al Costello teamed with Australia native Roy Heffernan and adopted an "Ultra Australian" gimmick complete with boomerangs, bush hats and the song "Waltzing Matilda" as their entrance music. Costello and Heffernan are arguably the most famous version of The Kangaroos, regarded as one of the top tag teams to ever compete in professional wrestling, and are often credited with popularizing tag team wrestling in the late 1950s and 1960s.