Revealing mistake: When Mario suggests grace to the Dino-Torch, his moustache overlaps on it. (00:08:18)
Revealing mistake: When Mario and Luigi realise that the clowns are dinosaurs, part of Mario's mouth briefly detaches from his face. (00:06:35)
Other mistake: When Princess Toadstool says that she and her friends have to save Mama Fireplant, her nose briefly disappears. (00:05:45)
Continuity mistake: When Wizenheimer says that he loves to hold people captive, the number of fingers on his right hand switches from four to five. (00:05:23)
Continuity mistake: When Mario tells Yoshi to not be afraid, the number of fingers he has on each hand switches from five to four. (00:01:54)
Continuity mistake: When Luigi explains that ball boys pick up balls instead of eating them, the number of fingers he has on each hand changes from five to four. This also happens when Mario says they should check out the circus, along with Mario. (00:02:02 - 00:04:22)
Revealing mistake: When Yoshi runs over to the ? block, Oogtar is briefly layered over him. (00:06:49)
The Night Before Cave Christmas - S1-E6
Revealing mistake: When Oogtar opens the second present, he is briefly layered over it. (00:07:06)
The Night Before Cave Christmas - S1-E6
Continuity mistake: When Oogtar says that he does not deserve a present, Mario's red overalls turn purple. (00:11:02)
Other mistake: When the Koopa Troopa slides the manhole back into place, part of it turns transparent. (00:04:55)
Continuity mistake: When Mario and Luigi are in the lava pit, the pizza Luigi is cooking changes direction between shots. (00:08:52 - 00:09:22)
Revealing mistake: When Mario and his friends reach Kastle Koopa, a railing is layered over Mario. (00:04:07)
Continuity mistake: When King Koopa is first seen in a Koopa Clown Car, the rim around it is white, but in the next shot, it is green. (00:02:45)
The Night Before Cave Christmas - S1-E6
Continuity mistake: When Mario and Yoshi run away from the Koopa Football Players, the orange rims of their helmets turn white, like their mouth guards. (00:09:05)
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 picks up the shell, its green underside turns brown like its rim. (00:03:52)
Continuity mistake: When Luigi asks Mario about the message, Princess Toadstool is sending, Mario's blue shirt turns red, while the stripes on his and Luigi's gloves turn the same color as their shirts. In the same shot, Luigi's mouth initially is not moving when he speaks. (00:09:11)
Continuity mistake: When the Mega Mechanasaur starts breaking into Dome City, its dark-blue shoulders turn light blue. In the same shot, the cover underneath it disappears. (00:07:37)
Other mistake: When Yoshi is holding onto the bridge, part of its sides turns transparent. (00:04:42)
The Night Before Cave Christmas - S1-E6
Revealing mistake: When Mario tells Yoshi to hold on as he gets him some wings, the sleigh can be layered over the bridge, as well as when he is about to fly off. (00:10:29)
