Midnight Snackers

Zombies (or Living Dead) that wake up at midnight, and come out of the ground to attack your house and eat your brains. This particular breed of zombies only eat brains, and only wake up at midnight. They're attack ends before the sun comes up.

GJ: It's midnight.
Mikey: The midnight snackers are coming.
Kyle: Protect my brains!

Stripper: I don't have any brains!