Robo Koopa - S1-E52
Continuity mistake: In the scene where Bunsun messes up Robo Koopa's controls, everyone's surroundings keep changing in almost every shot, which is basically the floor they are standing on, and the backgrounds. (00:02:10 - 00:03:30)
Robo Koopa - S1-E52
Continuity mistake: The Plumbinator is light blue. It changes to a darker blue when Mario says "May the best machine win" to Koopa. (00:10:05)
Robo Koopa - S1-E52
Factual error: Koopa tries to kill the Mario brothers, Bunsun and Dr. Nerdnik by pushing an electric pole at them. Mario and Luigi use a nearby fire hydrant to protect them by having water rush out of it and keeping the pole from crushing them. There is no way a single blast of water can stop a large pole from falling, and the brothers would have been electrocuted as soon as the water hit the pole. (00:07:00)
Robo Koopa - S1-E52
Continuity mistake: As the fight between Koopa and the Plumbinator begins, in one shot the camera zooms in to Koopa while under the Plumbinator's legs. Robo Koopa's color is light blue in this shot, when it is dark blue in the rest of the episode. (00:10:15)
Robo Koopa - S1-E52
Continuity mistake: When the Marios are hurting enemies and freeing Dr. Nerdnik, Mario kicks through a gate at the start of the scene in order to get inside. This gate disappears, once when Bunsun pushes the doctor through the hole, and twice at the end of the scene. (00:04:45 - 00:06:30)
Rolling Down the River - S1-E5
Audio problem: Before Mario tells the Koopa Troopas to go fish, he speaks, but his mouth does not move. (00:03:53)
Revealing mistake: In many episodes, when the outside of Mario and Luigi's business is shown, the edge of the backdrop can be seen.
Revealing mistake: When the crocodiles approach the tree, one of them is layered under a rock. (00:11:57)
Visible crew/equipment: In the live-action segment, several times when Mario and Luigi confront Mrs. Gammliss, the shadow of either a crew member or a piece of equipment is moving at the top of the screen. It is not Mario, Luigi, or the Ratagator's, as they are not moving, and it is not the passersby's, as the shadow is present even when they are not present. (00:17:38 - 00:18:45)
Revealing mistake: In the live-action segment, when the glass in Luigi's hand shatters from Mrs. Gammliss' singing, Luigi can be seen actually pressing the glass together to make it break instead. (00:17:59)
Revealing mistake: In the live-action segment, when Mario says that Luigi has been eating breakfast backwards, the screen is briefly frozen for a few frames, revealing that Luigi eating backwards is merely footage of him eating forwards played backwards. (00:18:55)
Revealing mistake: In the live-action segment, when the Super Plant chases Mario and Luigi, the actor's shoes can be seen. This also happens when the Super Plant heads over to Dr. Toby. (00:17:43 - 00:18:57)
Robo Koopa - S1-E52
Revealing mistake: When Robo Koopa bursts out of the workshop, he is briefly layered over a wall. (00:08:49)
Robo Koopa - S1-E52
Revealing mistake: When Mario and his friends run, as they fight off Koopa's minions, Luigi runs in midair. (00:07:12)
Robo Koopa - S1-E52
Revealing mistake: After Robo Koopa asks how to stop his suit when it malfunctions, he moves without moving his legs. (00:05:10)
Star Koopa - S1-E51
Revealing mistake: When Princess Toadstool zaps the Stormtroopa holding Luigi, the light around it is misplaced. (00:06:48)
Star Koopa - S1-E51
Revealing mistake: When Obi-Wan Toadi presents the pizza to Mario, the right strap of Mario's seat is connected to thin air. This also happens when he says that the pizza will bolster his appetite. (00:14:48)
Star Koopa - S1-E51
Revealing mistake: When Princess Toadstool explains that the Mushroom Colonists have a right to be on their planet, a line on her dress appears over her right arm. (00:07:13)
Star Koopa - S1-E51
Continuity mistake: After Darth Koopa tells Mouser to speed up the Koopa Star, his costume disappears. (00:04:58)
Continuity mistake: Throughout most of the episode, the mayor's mustache is brown, but in his initial appearance, it is black instead. (00:04:34)
