Mario meets Koop-Zilla - S1-E28
Revealing mistake: When Mario says that the Super Sushi makes for great spaghetti sauce, his visor is layered in front of his head. (00:03:44)
Mario and the Beanstalk - S1-E7
Audio problem: When Mario asks where the way out is, he speaks through Goosey's mouth. (00:14:32)
Mario and the Beanstalk - S1-E7
Continuity mistake: When Mario and his friends try to escape through the window, the gate blocking the door disappears. (00:10:53)
Mario and the Beanstalk - S1-E7
Continuity mistake: When Princess Toadstool tells Mario that someone very large lives in the castle, the white stripes on Mario's gloves turn blue like his shirt. (00:09:03)
Continuity mistake: When Mario and his friends fly past King Koopa while he is with the genie, the black wheel on the back of their magic carpet turns yellow, while the yellow rim turns black. (00:15:47)
Factual error: When King Koopa looks in the mirror, the reflection is not reversed. Additionally, it would not be possible for him to get a reflection of Mario and his friends since they are underneath him. (00:12:24)
Revealing mistake: When Toad is disguising the car, the dust freezes for a few seconds. This also happens when King Koopa sucks it up. (00:11:48 - 00:13:19)
Revealing mistake: When the guard pokes Toad with his spear, it does not touch Toad, but he reacts as though it did. (00:05:25)
Butch Mario & the Luigi Kid - S1-E3
Continuity mistake: When Kid Koopa is about to light a Bob-omb, the white spikes on his tail turn yellow. (00:16:58)
Butch Mario & the Luigi Kid - S1-E3
Continuity mistake: When Mario knocks Mouser's hat off, his tan hat turns red. In the same shot, Toad can be seen in his regular clothes instead of his cowboy outfit. (00:12:26)
Butch Mario & the Luigi Kid - S1-E3
Continuity mistake: When Toad grabs the bag of Bob-ombs, it has the word "bombs" written on it. But when he leaves the tavern, the text disappears. (00:13:25)
Butch Mario & the Luigi Kid - S1-E3
Continuity mistake: When Mario and Luigi play patty-cake in the cell, the number of fingers they have on each hand changes from five to four. (00:12:19)
Butch Mario & the Luigi Kid - S1-E3
Continuity mistake: When Mario and Luigi point at each other, Mouser's grey ears turn brown like his hat. (00:12:11)
Butch Mario & the Luigi Kid - S1-E3
Audio problem: When Mario says that there is free food, his mouth does not move. (00:11:03)
Butch Mario & the Luigi Kid - S1-E3
Character mistake: When Mario notices the sign for free food, the sign for the sheriff misspells it as "shpriff". (00:11:00)
King Mario of Cramalot - S1-E2
Other mistake: When King Koopa is escaping into a Warp Zone, the background in the portal is the same as Cramalot Castle. (00:17:36)
King Mario of Cramalot - S1-E2
Continuity mistake: In a couple of shots, while Mario and King Koopa are fighting, Mario's red shirt turns white like his overalls. (00:15:24 - 00:17:05)
King Mario of Cramalot - S1-E2
Continuity mistake: When Mario is climbing the stairs in Cramalot Castle, buttons appear on the back of his overalls. (00:15:18)
King Mario of Cramalot - S1-E2
Continuity mistake: When Mario is about to catch Excalibur, the number of fingers he has on his right hand switches from five to four. (00:12:16)
King Mario of Cramalot - S1-E2
Continuity mistake: When Luigi tells Mervin to teleport him and his friends out of the dungeon, his shackles disappear. (00:11:18)