Continuity mistake: When King Koopa and Kooky board the Mega Mechanasaur, the brown borders around the cockpit turn blue. (00:07:48)
Continuity mistake: When Kootie Pie steps on a porcupinefish, her yellow bracelet turns brown like her body. (00:10:29)
Continuity mistake: When Princess Toadstool throws the Fire Flower to Mario, the underground is depicted at ground level. (00:08:34)
Revealing mistake: When a cave person drives out of the factory, he overlaps onto a house. (00:05:38)
The Night Before Cave Christmas - S1-E6
Revealing mistake: When King Koopa and Bully are thrown into the rubbish, the Rex carrying it freezes. In the same shot, King Koopa's cream claws turn yellow like the spikes on his shackles. (00:04:17)
Continuity mistake: When King Koopa says, "The cave people will become food for his dinosaurs," his cream claws turn yellow like the spikes on his shackles. (00:03:03)
Continuity mistake: When Luigi says that he and his friends are trapped, Princess Toadstool's orange eyebrows turn black. (00:05:33)
Continuity mistake: When Mario jumps on a Mechkoopa, his black eyebrows turn brown. (00:10:26)
Other mistake: When Oogtar says the Warp Pipe leads to the haunted house, his eyebrows disappear briefly. (00:07:50)
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: In this episode, the bottom of King Koopa's feet changes from green to yellow.
Continuity mistake: Throughout the episode, Mario and Luigi switch between having four fingers on each hand to five.
The Night Before Cave Christmas - S1-E6
Continuity mistake: When Mario says that Oogtar has some explaining to do, the white stripes on his gloves turn blue like his shirt. (00:09:44)
Continuity mistake: When Luigi is giving some ice cream, his white gloves turn the same color as his skin, while the stripes turn the same color as his shirt. (00:11:08)
Continuity mistake: When Mario sees Princess Toadstool in the Koopa Clown Car, his white gloves turn the same colour as his skin. (00:10:18)
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: 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 Mama Fireplant thanks Yoshi for saving her, part of her blonde hair turns red like her head. (00:11:22)
Revealing mistake: When Oogtar is impressed after Yoshi eats the caterpillar, his hair is layered over his left hand. (00:07:26)
