....... Why did you have to say that, I liked the one I had until I looked too closely, now the things freeking me out.......It won't stop staring at me.....
Personally it has to be Yamask or Parasect
Yamask comes from the spirit of people buried in graves and it remembers its former life, the mask it carries is in the image of its face when it was human and sometimes it'll look at it and cry.... Really creepy
Parasect is evolved from Paras which has two small mushrooms on its back, when it evolves the mushroom over powers the host body and takes complete control, that's why Parasects eyes look dead..... Creepy
Or Cubone but I gusse it's more sad than anything. Plus the few Pokemon that kidnap children like Duskull or Drifloon (which when a child mistakes it for a balloon they spirit them away) .......this game seems a lot more sinister now.
Oh and I love Deadman Wonderland, read the manga too if you get a chance :D