Continuity mistake: When Mama Fireplant thanks Yoshi for saving her, part of her blonde hair turns red like her head. (00:11:22)
Revealing mistake: When Mama Fireplant says, "It is great to be back," Mario is overlapping a cave person. (00:11:17)
Continuity mistake: As Yoshi and his friends are about to escape Kootie Pie's lair, Mario is to the right of the Mama Fireplant, while Luigi is to the left. But in the next shot, they switch places. In the same shot, Yoshi is colored blue as though he was stung by a porcupinefish despite never stepping on one. (00:11:09)
Continuity mistake: After Mama Fireplant picks up Princess Toadstool, one of her green leaves turns blue. (00:11:04)
Continuity mistake: When Princess Toadstool catches Mario, her blue eyes turn black. This also happens when Mario jumps into the slush to save Luigi. (00:07:24 - 00:07:54)
Continuity mistake: When Mario throws Luigi into the Warp Pipe, the ice under the grate disappears, making it appear as if the grate is resting on nothing. (00:06:03)
Continuity mistake: When Luigi is about to slip on the ice, the symbol on his cap has its colours reversed, with the "L" being white and the background being black instead of the other way around. (00:05:12)
Continuity mistake: When Mama Fireplant picks up Mario, the porcupinefish's white sclerae turn blue, like its body. (00:10:56)
Continuity mistake: When Kootie Pie steps on a porcupinefish, her yellow bracelet turns brown like her body. (00:10:29)
Continuity mistake: When Mario and his friends are falling into Ice Land, the hand Mario holds onto Princess Toadstool with switches a couple times. (00:07:35)
Continuity mistake: When Mario and his friends are about to land on the second platform, the spikes on Yoshi's back are missing. (00:06:36)
Audio problem: When Princess Toadstool jumps into the Warp Pipe, she speaks, but her mouth does not move. (00:06:11)
Other mistake: When Princess Toadstool says that she and her friends have to save Mama Fireplant, her nose briefly disappears. (00:05:45)
Other mistake: When Luigi mentions the last time he saw ice, he has a green "M" on his cap instead of a black "L". (00:05:36)
Continuity mistake: When Luigi crashes into his friends, Mario's white gloves turn the same colour as his skin, while the stripes turn blue like his shirt. This also happens when Mario asks where the ice came from. (00:05:21)
Continuity mistake: When Luigi crashes into his friends, the white stripes on his and Mario's gloves turn blue, like their shirts. (00:05:18)
Continuity mistake: Throughout the episode, Mario and Luigi switch between having four fingers on each hand to five.
Audio problem: Several times throughout the episode, characters' mouths move without any dialogue being present.
Other mistake: When the Koopa Troopa slides the manhole back into place, part of it turns transparent. (00:04:55)
Other mistake: When Yoshi is holding onto the bridge, part of its sides turns transparent. (00:04:42)
