"John" is an NPC troll residing in the western underground tunnels. He is hiding behind his own personal barrier and no one but Jacob has seen his face clearly to date.
Clearly this is john

As drawn by Jacob.

Things to know about John:

1) He eats people.

2) He has tentacles.

3) Jacob is his bitch.

4) He enjoys lolita.

5) He cures the Death Penalties.

6) He wears glasses.

7) It's all in the name of SCIENCE.

Five of these are true.