Continuity mistake: When Mario is brainwashed, his white teeth turn skin-colour. (00:06:01)
Revealing mistake: When Mario tells Kooky what to do, he appears out of thin air. (00:10:06)
Continuity mistake: After Kooky says that Mario is their prisoner, the orange heads of the Hammer Bros. turn cream-coloured. (00:05:31)
Continuity mistake: When the Lame Brainer comes off Mario, the wrench he is holding disappears. (00:09:43)
Continuity mistake: At the end of the episode, Toad's house changes from orange to pink. (00:10:46)
Continuity mistake: When Luigi says he and Mario agreed to never fight again, Mario's blue eyes turn green like Luigi's. (00:10:57)
Continuity mistake: When Luigi asks if Mario is all right, Mario's brown hair turns black. In the same shot, the yellow eyes on Luigi's Frog Suit briefly turn white. (00:09:54)
Continuity mistake: When Luigi tries to help Mario remember who he actually is, Mario's blue shirt turns red like his overalls. (00:09:31)
Continuity mistake: When Mario says the leak is fixed, he is holding a wrench, but when Luigi enters the dungeon, he is holding a plunger. This also happens when King Koopa tells him to attack Luigi. (00:08:39)
Character mistake: When Luigi is about to jump into the Warp Pipe to Pipe Land, he says Mario told him to wear a Frog Suit, but it was actually Princess Toadstool. Mario repeats this error after Luigi asks if he is all right. (00:06:58 - 00:10:01)
Revealing mistake: When Mario is being pulled into Pipe Land, he and the line appear from thin air. (00:05:00)
Continuity mistake: At the beginning of the episode, Toad's house changes from orange to purple. (00:00:44)