.So, I came up with idea of a tree monster, I thought that this would fit the theme of the game.
The monster disguises itself as a normal tree in the game, however it has some differences in appearance from a ordinary tree in the game. When it is approached it leaves its disguise mode and starts chasing and attacking the player. When it leaves its disguise mode its appearance changes into a more distorted looking tree. I would like to know what you think of this idea.