S1·E22 Monstro vs. the Wolf Hound
Aired October 1, 1984
Synopsis
Riff Raff and the cats watch a horror movie, and that night Riff Raff dreams he is Dr. Frankencat and has created a monster. It's a regular nightmare, with even Leroy showing up as the Wolfman. Riff Raff wakes up screaming for help, and glad it was all a dream.