ThunderCats (comics) are held prisoner in Castle Plundarr while Wilykit and Wilykat are the personal servants of Mumm-Ra. This storyline was distinctly more mature than many episodes of the series, with much harsher language such as "bastard" used by Mumm-Ra. Cheetara is depicted as holding a grudge against Lion-O for "abandoning" his friends and leaving her to be abused by the Mutants and WilyKat's corruption in the earlier mini-series takes greater form. Realizing he has betrayed his friends, the older cub flees when the mini-series concludes. Lion-O and the ThunderCats emerge triumphant over Mumm-Ra once again. By the third mini-series, "The Dogs
History of animation by Walter Ruttman, Hans Richter, and Oskar Fischinger, however, the Nazis censorship against so-called "degenerate art" prevented the abstract animation from developing after 1933. The earliest surviving animated feature film is the 1926 silhouette-animated "Adventures of Prince Achmed", which used colour-tinted film. It was directed by German Lotte Reiniger and French/Hungarian Berthold Bartosch. In 1923, a studio called Laugh-O-Grams went bankrupt and its owner, Walt Disney, opened a new studio in Los Angeles. Disney's first project was the "Alice Comedies" series, which featured a live action girl interacting with numerous cartoon characters. Disney's first notable breakthrough was 1928's "Steamboat Willie",