The Mask: Animated Series (1995)

S3E4 They Came from Within

The Mask and Lieutenant Kellaway find themselves ensnared in a comic book universe, where the inhabitants mistake the officer for their greatest foe. As chaos ensues, Kellaway must navigate this bizarre realm alongside the unpredictable Mask, who revels in the absurdity of their predicament. Together, they confront the challenges posed by the comic book characters while trying to clear Kellaway's name, all while the line between hero and villain blurs in this whimsical yet perilous adventure.