Revealing mistake: When Pronto starts dodging the Koopa Troopas, he briefly appears to be floating in midair. (00:10:51)
Little Red Riding Princess - S1-E44
Revealing mistake: When Gramma removes the lock from the door, it passes through its holder. (00:07:20)
Revealing mistake: When the female monkey grabs Marzan, he appears out of thin air. (00:08:35)
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)
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)
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)
Revealing mistake: After Alley Koop orders his army to attack, he is briefly layered over a Koopa Troopa. (00:04:01)
Revealing mistake: When Luigi trips over a bone, the bone is layered over him. (00:03:30)
The Koopas are Coming! The Koopas are Coming! - S1-E35
Revealing mistake: When George Washingtoad slides away from his tent, he briefly overlaps the stove and one of his guards. (00:07:20)
Revealing mistake: When Mario says that it does not look good for him and his friends, a Koopa Troopa's foot overlaps the sombrero chariot. (00:06:46)
Revealing mistake: In the live-action segment, when E.C. arrives, the basement shakes but the objects remain stationary, revealing that the shaking was achieved by shaking the camera. (00:02:10)
Revealing mistake: When Rappin' Koopa looks through his telescope, part of the background can be seen at the edges of the screen. (00:05:08)
20,000 Koopas Under the Sea - S1-E26
Revealing mistake: When Mario and his friends are running from the Koopilus, Mario freezes for a split-second. (00:03:43)
Hooded Robin and His Mario Men - S1-E25
Revealing mistake: When Mario tells Hooded Robin to remember him and his friends, Luigi is layered between the crossing gate. (00:07:04)
Hooded Robin and His Mario Men - S1-E25
Revealing mistake: When Hooded Robin introduces himself, a bush moves with the screen for a few frames. (00:04:06)
Revealing mistake: When Mario runs over to the Ostro, he can briefly be seen running in midair. (00:07:56)
Revealing mistake: When Mario climbs out of the pit, he passes through Toad. (00:07:28)
Revealing mistake: When the debris covers the trapdoor, some debris from behind it overlaps the debris on it. (00:09:13)
