Escape from Koopatraz - S1-E46
Revealing mistake: When Mouser tells everyone to rise for Judge Koopa, he is layered over a wall. (00:03:19)
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)
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 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)
Revealing mistake: When the female monkey grabs Marzan, he appears out of thin air. (00:08:35)
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 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)
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: In several shots, the white spikes on King Koopa's tail turn orange.
Hooded Robin and His Mario Men - S1-E25
Continuity mistake: When King Koopa asks Hooded Robin, "How does it feel to be in his dungeon?", the spikes on his shackles disappear. (00:08:41)
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)
Revealing mistake: After Mario retrieves his Plumber's Helper, he is briefly layered over Princess Toadstool. (00:16:26)
Two Plumbers and a Baby - S1-E17
Revealing mistake: When Mario and Luigi look at what King Koopa is doing with the infants in the castle, one of the infants is laid out of the castle instead of inside it, and shortly after, a tricycle is laid over another tricycle. (00:06:31)
Revealing mistake: When the camera pans across the front of Double Cross Ranch, the edge of an animation cel is visible. (00:13:51)
Continuity mistake: When the limousine drives down the street, it has the US and USSR flags on the front of the limousine, but when water pushes it back, the flags change to generic red and yellow flags. (00:12:19)
Elvis Lives - S1-E39
Continuity mistake: When Luigi inflates one of the tyres on their car, he is by the car, but when the tyre explodes, he disappears. (00:12:20)
Elvis Lives - S1-E39
Continuity mistake: When Princess Toadstool says that Kool Koopa has trouble, Kool Koopa's red car turns green. (00:12:52)
Elvis Lives - S1-E39
Revealing mistake: When Kool Koopa tells the Goombas to get Mario and his friends, a building overlaps one of the Goombas. (00:05:17)
Elvis Lives - S1-E39
Continuity mistake: When the shoes say that Elvin will be unfrozen if Princess Toadstool puts them on him, Elvin's brown socks turn blue like the shoes. (00:08:51)
Revealing mistake: After Alley Koop orders his army to attack, he is briefly layered over a Koopa Troopa. (00:04:01)
