Continuity mistake: When Big Mouth says that the Koopas will be doomed if Mario and his friends get the Doom Dancer, his star disappears. (00:06:03)
Continuity mistake: When Big Mouth says that Mario and his friends have a map to the Doom Dancer, Cheatsy's green head turns orange like his body. (00:05:52)
Continuity mistake: When King Koopa becomes upset, and the Doom Dancer is destroyed, the orange spikes on his shackles turn white. (00:11:37)
Continuity mistake: When King Koopa is shocked, his yellow eyes turn white. (00:00:26)
Continuity mistake: When the camera pans over to the Doomship, the white stripe on Mario's left glove turns blue like his shirt. (00:00:07)
Continuity mistake: When Big Mouth asks what King Koopa said, Bully's pink head turns orange. This also happens when he gives King Koopa the Doom Dancer. (00:02:34 - 00:08:42)
Audio problem: When the Koopalings watch the Doom Dancer as it falls to the ground, their mouths move, but no sound can be heard. (00:11:31)
Other mistake: When the Doom Dancer starts heading towards King Koopa, and when it falls to the ground, it appears to be heading towards the floor of the Doomship instead. (00:10:53 - 00:11:30)
Continuity mistake: When King Koopa says he can make the entire Mushroom Kingdom dance, one of the orange spikes on his shackles turns white, like his claws. (00:09:05)
Continuity mistake: When Bully realises that King Koopa cannot hear him, the white rim on his shell turns black like his shackles, and shortly after, his pink shell turns green. (00:08:33)
Continuity mistake: When Cheatsy and Big Mouth look at Bully when he catches the Doom Dancer, Cheatsy's black shackles turn green. (00:07:23)
Continuity mistake: When Cheatsy pushes Big Mouth aside, the yellow rim on Big Mouth's shell turns white. (00:07:14)
Continuity mistake: After Mario and his friends trip on the rope, it disappears. (00:07:07)
Revealing mistake: After Mario dodges a spike, the screen freezes for a few seconds. (00:04:08)
Other mistake: When Mario is breaking some Blocks to find some Super Leaves, some of them remain intact. (00:03:42)
Continuity mistake: When Cheatsy is relieved, Big Mouth's purple eyelids turn grey like his head. This also happens when King Koopa tells the Koopalings that the Dry Bones will show them where Mario and his friends went. (00:02:43)
Continuity mistake: When King Koopa explains to the Koopalings what he actually said, his yellow eyes turn white. (00:02:39)
Continuity mistake: When Mario asks Luigi if he wants King Koopa to know that they and their friends are in Dark Land, his brown hair turns black. This also happens when he and his friends start marching, and when he puts putty in his ears. (00:02:08 - 00:10:32)
Continuity mistake: When the Warp Pipe appears in Dark Land, Mario and his friends appear, but in the next shot, they and the pipe are replaced by a Dry Bones. (00:02:02)
