Escape from Koopatraz - S1-E46
Revealing mistake: When Warden Koopa tells Mouser to show Mario and his friends their cells, his foot is layered over a Koopa Troopa. (00:06:47)
Continuity mistake: When Mario trips, while telling Billy the Koopa and his Koopa Troopas to stop, the red linings on his shirt turn white, like his gloves. (00:11:27)
Revealing mistake: When Pronto starts dodging the Koopa Troopas, he briefly appears to be floating in midair. (00:10:51)
Continuity mistake: When Billy the Koopa says that he will trap Mario, his trousers disappear, and shortly after, part of his lower jaw is not fully coloured in. (00:09:06)
Character mistake: After Pronto warns Mario of the path being a trap, Mario says that he earned an A plus for unclogging drains in the Brooklyn Plumbers Academy. However, in "Plummers Academy", he actually flunked out of the academy along with Luigi. (00:09:29)
Continuity mistake: After Mario shoots one of the Koopa Troopas, the Koopa Troopa has a tan band on its hat, but in the next shot, the band turns red. (00:13:32)
Continuity mistake: When Mario shoots one of the X's on the Double Cross Ranch sign, the sign is supported by two poles, but in the next shot, it is supported by one. (00:14:02)
Little Red Riding Princess - S1-E44
Revealing mistake: When Gramma removes the lock from the door, it passes through its holder. (00:07:20)
Continuity mistake: When Toad explains that King Koopa and his minions are cutting down the tree, his vest disappears. In the same shot, he speaks through King Koopa's mouth. (00:14:42)
Audio problem: When Luigi says that Mario's wrench will bring his memory back, his mouth does not move. (00:13:59)
Revealing mistake: When the female monkey grabs Marzan, he appears out of thin air. (00:08:35)
Continuity mistake: When Marzan fights a lion, his clothes are ripped, but when he falls with the female monkey, his clothes are intact. This also happens when he saves his friends. (00:08:16 - 00:10:41)
Continuity mistake: In several shots, the white spikes on King Koopa's tail turn orange.
Factual error: When water starts flooding Brooklyn, the water floods the main road but never floods the side roads. (00:12:21)
Continuity mistake: When the President's car drives up to the Mario Bros, it has the US flag on the left of the car, but in the next shot, it is on the right of the car. (00:12:02)
Continuity mistake: When the construction workers walk over to Sergeant Kooperman, the one with a yellow shirt has mud on his shirt, but in the next shot, the mud disappears. (00:11:42)
Revealing mistake: When Sergeant Kooperman stops at the fire escape, he moves without moving his legs. (00:06:35)
Revealing mistake: After Mario retrieves his Plumber's Helper, he is briefly layered over Princess Toadstool. (00:16:26)
Revealing mistake: When the clogs splash on Sergeant Kooperman's face, the one from Mario's sink appears out of thin air. (00:07:50)
Audio problem: When Mario says, "Who cares?", he speaks with Luigi's voice. This also happens when he is surprised by the amount of time Sergeant Kooperman gives him and Luigi to unclog the sink. (00:05:19 - 00:07:41)