Generation O! is an American animated series that aired on Kids' WB!. The show focuses on the character of Molly O, an 8-year-old rock star and the lead singer of the band "Generation O!" along with bassist Nub (a human), guitarist Eddie (Molly's cousin), drummer Yo-Yo (a kangaroo), and manager Colonel Bob. Molly also spends time with her best friend Chadd, and tries to avoid her pesky brother Buzz.
It premiered in 2000 and ran for a single season of 13 episodes before it ended in 2001.