Mind Your Mummy Mommy, Mario - S1-E3
Revealing mistake: When Toad's cousin is explaining his maps, his eyelids are briefly layered over his glasses. In the same shot, Luigi's white sclerae turn the same color as his skin. (00:05:49)
Dawn and the Haunted House - S1-E2
Revealing mistake: Stacey can be heard whispering instructions to the kids she and Dawn are watching.