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).
For the children's movie, see Purple People Eater (film). For the American football players, see Purple People Eaters. The Purple People Eater is a novelty song written and performed by Sheb Wooley, which reached no. 1 in the Billboard pop charts in 1958 from June 9 to July 14, and reached no. 12 overall in the UK singles chart.