Costello was not ready to give up on The Fabulous Kangaroos concept after St. Clair retired, and a few months later he found a new man to don the bush hat: Don Kent. Kent, who was from Michigan, adopted the Ultra-Australian gimmick (but retained his American accent) and the two formed the third overall and second most well-known version of the Fabulous Kangaroos. Costello and Kent continued in a tradition that was reminiscent of the original Kangaroos; when a federation needed a new tag team title, the Kangaroos were brought in and acknowledged as champions on arrival instead of holding a tournament to determine the champions. In 1967, the Japanese federation "International Wrestling Enterprise" (IWE) brought the Kangaroos in as the first Trans-World Wrestling Alliance World Tag Team Champions. They held this title until 10 January 1968 when IWE mainstays Toyonobori and Thunder Sugiyama beat them for the gold.