Mole

It hides underground, and pops up when stepped on.
The mole is my favorite monster that i've designed for Child's Play.

Here are some early designs.

It used to have a counterpart, that was a worm. The worm would be attracted to the 'flower' on it's nose, effectively destroying it and blocking off the area behind it.

The worm never got past the ref page, but I still really like its design. Its silly :)
The amount of segments it needed would make the game slow down so, no more worum.