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
Cartoon Network Universe: FusionFall put into the game, where players made their characters and started playing. "FusionFall"'s development, however, stopped so Cartoon Network could focus on other games such as "Project Exonaut", "Formula Cartoon", and "FusionFall Heroes". The Holo Suit, an in-game outfit, used to change look, reflecting in-game events and the time of year. On March 25, 2013, about five months before the original game's shutdown, Cartoon Network released a new "FusionFall" game called "FusionFall Heroes". In this game, instead of playing an avatar players created online, Cartoon Network decided to let online players actually play different variants of their favorite Cartoon Network