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or the zombies will eat your brains!
Sleepy is an elusive plant foe in Plants vs. Zombies: Battle for Neighborville who resembles a Night Cap wearing the "Gnomish Spot-Shroom" Costume.
Sleepy can be found on Camp Near-a-Lake in Weirding Woods, however she will only appear if the woods have been put to sleep. Defeating her unlocks the ELUSIVE FOE: Sleepy medal.
The name "Sleepy" derives from how Sleepy will only appear if the woods have been put to sleep beforehand.
It may also be a reference to how mushrooms in the original Plants vs. Zombies fell asleep during the day, as Sleepy resembles a Night Cap, the only mushroom class in the game.