In some ancient civilizations the Wolf was a symbol of the underworld. In Egypt, the guardian of the dead was Anubis who was a wolf-headed god. The jackal portrayed as black was the symbol of both death and regeneration.
William is also the one who hid inside the suits and kidnapped and killed children, leading to the assumption that William Afton is The Purple Guy of FNaF 2 and 3 (he is killed at the end of the book when Charlie sets off the spring locks in his suit).
tags five nights at freddy s scott cawthon pc rpg update photo scott games fnaf world update 2 has been released and it adds a slew of characters to the tortured five nights at freddy s rpg teasers also indicate the inclusion of new mini games and story secrets too fnaf world is available now as a free pc download