My Babysitter's a Vampire (2011)

S2E11 Halloweird

Ethan's Halloween party quickly spirals into chaos when Rory's enchanted mask turns the guests into actual versions of their costumes. With only until midnight to undo the spell, Ethan, Benny, and Sarah face a challenging task. The situation becomes even trickier as they contend with an out-of-control supercomputer, a gorilla, a half-dolphin ninja, and Erica, who seeks tranquility to celebrate a 'traditional' True Vampire Halloween. To complicate matters further, Ethan's mom unexpectedly returns early from her own gathering, dressed in a convincingly authentic witch costume…