Brett Clarke is an Australian singer, dancer, entertainer, and entertainment manager who has performed as a background dancer and backing vocalist on several Wiggles videos, live concert tours, and albums. In addition to performing as a dancer and backing vocalist, Clarke had also appeared as a frequent co-host of the Dorothy the Dinosaur Show spin-off tour, often worked as a touring dance captain, served as an understudy for Anthony Field, Greg Page, and Paul Paddick on various occasions, and played Cool Clarky in The Wiggles Show!.
Prior to working for the Wiggles, Clarke had previously worked at the amusement park Australia's Wonderland in various capacities, including as a singer, dancer, actor, choreographer, and stage manager, and later worked for KAOS Comedy Restaurants as a cast member, show director, costume designer, and stand-up comic. Following his departure from the Wiggles, Clarke has since worked as a manager and coordinator for various entertainment companies such as Grayboy Entertainment, Just Promotions, the Bankstown Sport Club, and Fly By Fun.