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
Continuity mistake: When Mario says that he and his friends can attack Redcoat Koopa from behind, his head is layered behind the bubble he is in. (00:11:59)
The Koopas are Coming! The Koopas are Coming! - S1-E35
Continuity mistake: When Mario cools himself down in the bucket of water, there is no puddle nearby, but when he carries Luigi over to the stove, one appears. (00:06:59)
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)
Continuity mistake: After Toad says that he and his friends are surrounded, the white spikes on El Koopitan's tail turn orange. (00:12:04)
The Koopas are Coming! The Koopas are Coming! - S1-E35
Continuity mistake: When Mario jumps into the bucket of water, his left arm changes from blue to skin colour. (00:06:31)
Continuity mistake: When Zero walks up to Princess Toadstool after fighting the Koopa Troopas, the bathtub's levers and showerhead disappear. In the same shot, Princess Toadstool's brooch changes from being yellow with a blue centre to blue with a yellow centre. (00:07:30)
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)
Continuity mistake: When El Koopitan throws some cacti at Zero, the green rings around the spikes on his shell turn orange, like the spikes themselves. (00:08:51)
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)
Continuity mistake: Throughout the episode, Koopa Troopa's green hands turn yellow several times.
Mario and the Red Baron Koopa - S1-E30
Continuity mistake: When the Lakitu starts throwing Spiny Eggs at the Mushroomers, its green snout turns yellow, like its goggles. (00:04:59)
Hooded Robin and His Mario Men - S1-E25
Continuity mistake: When Mario and his friends look at the hallway leading to the Coins, Hooded Robin's red wings turn yellow. This also happens when Princess Toadstool takes a curtain. (00:11:19 - 00:11:47)
Hooded Robin and His Mario Men - S1-E25
Continuity mistake: When Princess Toadstool takes a curtain, Hooded Robin's red head turns yellow, like his beak. (00:11:47)
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)
Continuity mistake: When King Koopa tells Fryguy to prepare the Lava Machine, the white spikes on his tail turn orange. This also occurs when he approaches the boat. (00:10:06 - 00:14:50)
Revealing mistake: When the debris covers the trapdoor, some debris from behind it overlaps the debris on it. (00:09:13)
Revealing mistake: When Mario climbs out of the pit, he passes through Toad. (00:07:28)
The Adventures of Sherlock Mario - S1-E18
Character mistake: When showing the sign for the Retro Router, it misspells router as "reuter". (00:08:11)
Koopenstein - S1-E21
Continuity mistake: In Mouser's first appearance, he does not have a laboratory coat on, but in the next shot, one appears. (00:03:46)
