Mary-Kate and Ashley in Action! is an animated television series by DIC Entertainment, Dualstar, Buena Vista Television and Club Acclaim, featuring the voices and likeness of Mary-Kate and Ashley Olsen. It is also a series of books that spun off, from the show. The show premiered on October 20, 2001 on The Walt Disney Company's One Saturday Morning on The American Broadcasting Company and was cancelled after one season due to poor ratings. Reruns were later shown on Toon Disney.