Creep-Shroom

Creep-Shroom is a plant introduced in Grimrush and is a plant in Plants Vs. Zombies 2 and Plants Vs. Zombies: The Multiverse. In Grimrush, she is encountered in Black Castle. in Plants Vs. Zombies: The Multiverse, she's unlocked after completing Hacksaw Hills - Level 4B. And in Plants Vs. Zombies 2, she's unlocked after completing Viking Ocean - Evening 17.

Origin
Her name is a combination of 'creep,' referencing her eerie nature, and mushroom.

Grimrush
Creep-Shroom was added to Black Castle in the 1.3.8 update. In a certain point, she will start reaping to destroy runners.