The Clone Wars is set during the Star Wars prequel trilogy era, taking place over a span of three years in between the films Attack of the Clones and Revenge of the Sith. The protagonists comprise returning characters from the films, including Anakin Skywalker, Obi-Wan Kenobi, Padmé Amidala, Yoda, and Mace Windu, as well as new characters created specifically for the series, such as Anakin's Padawan Ahsoka Tano and clone Captain Rex of the 501st Legion. The series received at first mostly positive reception and later acclaim from critics and became a significant ratings success.