Den is an angry ghosty. He was happy when he was alive, but ever since he was murdered by hunters he's never been the same orangutan. For one he's now ever so slightly see-through, for another he's developed a hatred of humans. If you hear a disturbance in the night in Necklace Jungle, it could be Den.
Due to the lack of humans and presence of orangutans, Den has made Necklace Jungle his home. After a lot of difficulty he has learned to like the human associated with Necklace Jungle but what he really needs is a tolerant, kind guardian to enforce that humans aren't all bad - only then can he truly rest in peace.
|Left - Here he comes, out of the gloom! Right - Parts of Den glow in the dark a little but I can't catch it on camera|