Continuity mistake: When Mario asks why Toad is crying, Toad's red vest turns the same colour as his skin. In the same shot, Mario speaks without moving his mouth, while Toad's left arm occasionally detaches from his body. (00:06:14)
Continuity mistake: When Mario approaches his brother to tell him that they can get Toad's money, the red spots on Toad's cap turn grey. (00:06:50)
Continuity mistake: While Mario is in his wrestling outfit, his legs switch from not being covered to covered several times. (00:08:24 - 00:10:10)
Continuity mistake: When the referee asks who rang the bell, Mario's mask disappears. This also happens when he is pushed into a corner by some liquid. (00:08:46 - 00:09:41)
Continuity mistake: When Cheatsy is under the ring, his right cheek changes from cream-coloured to green. (00:08:53)
Continuity mistake: When Mario falls onto King Koopa, the string attached to the booby trap disappears. (00:08:55)
Continuity mistake: When Princess Toadstool says she will get some help, Toad is sitting beside her, but in the next shot, he is replaced by someone else. (00:09:35)
Continuity mistake: When Mario and Luigi say that they are not close to quitting, Luigi is inside the ring, but when a Sledge Bro. squirts some liquid at him, he is outside of it. (00:09:49)
Continuity mistake: When the Sledge Bros. approach Mario and Luigi in a corner, Mario's brown hair turns black. This also happens when Princess Toadstool tosses the Invincible Stars to them and they make their comeback. (00:09:54)
Continuity mistake: When the Sledge Brothers approach Mario and Luigi when they are at the corner of the ring, Luigi's mask goes from red to skin colour. (00:09:54)
Continuity mistake: When Mario grabs an Invincibility Star, his moustache flashes brown, but when he compliments the princess on her timing, it is not. (00:10:12)
Continuity mistake: When the Mario Bros. are flipping towards the Sledge Bros, the pitfall trap is on their side, but in the next shot, it is on the Sledge Bros'. (00:10:28)
Continuity mistake: At the beginning of the episode, Toad's house changes from orange to purple. (00:00:44)
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 Mario is brainwashed, his white teeth turn skin-colour. (00:06:01)
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)
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 the Lame Brainer comes off Mario, the wrench he is holding disappears. (00:09:43)
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: At the end of the episode, Toad's house changes from orange to pink. (00:10:46)