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).
Yaki Kadafi (Yafeu Fula), also known as Young Hollywood, Killer Kadafi and The Prince, was given the name Yaki Kadafi after Libyan leader Muammar Gaddafi. He was also Shakur's godbrother and an original member of Dramacydal. He was killed by Napoleon's cousin on November 10, 1996, 2 months after the death of Makaveli.