[Shell Man]

The Hylden lord,(who becomes the Serafan Lord in BO2) Needed Janos' body to posess so he could return to the world from where all the Hylden were banished centuries ago. When Raziel revived Janos, he provided that body. (Turel was the other eligable host, but he was stuck in a pit) Then in BO2, Janos' body will be used to power the Hylden's super weapon after the Hylden lord gets his own body. It all goes back to the murals depicting the Vampire savior vs. the Hylden savior. Raziel is both, because in order to do his part to save the world, he has to help the enemy as well. The good thing is that because of Raziel's sacrifice, Kain now has the one weapon that can defeat the enemy, and he has been purified as well.