Anubis is the jackal-headed Egyptian Lord of the underworld, the Judge of Souls. He is the original Werewolf.
Apep used a supercollider on the ley line in Alberta, Canada to cause a space-time rift and bring Anubis back to life so he could kill the Librarians. Anubis infected the personnel of the Canadian supercollider facility in order to create an army for Apep. The Librarians reactivated the supercollider to create other space-time rift to send Anubis back through.