Are You Afraid of the Dark?

The Tale of the Ghastly Grinner (4x9)

Air date: Dec 03, 1994

Ethan wants to be a comic book artist, but his submissions are constantly rejected by companies. One day, he's invited to a comic shop, where he gets the only copy of the comic ""The Ghastly Grinner."" He accidentally brings the supervillain to life and it starts turning everyone into giggling mindless idiots.