In Megakat Asylum for the Insane and “Katatonic”, a psychopathic comedian named Lenny Ringtail (most likely named after real life comedian Lenny Bruce) is being kept in a padded room in a straitjacket. Ringtail (voiced by Roddy McDowall) went crazy when he was rejected as host for a late night talk show that eventually went to David Litterbin (most likely named after David Letterman). Ringtail manages to escape the asylum and while looking for a place to hide, stumbles upon an old magic shop. There he finds an old jack-in-the-box that resembles him. After knocking out the store owner (voiced by James Hong), he is possessed by the ghost of an ancient jester who suffered similar rejection hundreds of years ago. He turns into Madkat, a psychotic, shape-shifting joker who plans to kidnap the king, queen, knight and jester of Megakat City (Mayor Manx, Callie Briggs, Commander Feral and David Litterbin, respectively). Even the SWAT Kats can’t stop Madkat’s reality warping tricks, and they must rescue everyone and vanquish Madkat before he goes too far.