Enderman

The creature's name is Skell. He doesn't speak very well, partly because Endermen don't talk, and this is new to him. He can say a few phrases, but they're almost always incomplete (for example: "Give me some... water...") or sometimes he just makes strange noises like grunts (argh... ahh... etc.).
Endermen are afraid of water, so Skell hates water.
When you find him, he's injured because he probably fell.
Endermen are colorblind.
Endermen are able to teleport.

Her mouth is torn, going from ear to ear; she has brown hair, purple eyes, white skin, and black fingernails.
height: 2.14

Skell is an Enderman who found a potion labeled "human potion"—obviously he can't read—and drank the liquid from the bottle, thus turning into a human.