Despite his appeareance, Alcasan is in fact Bolabogg
. In fact, he's the child he had with Violet Grey
in his attempt to emulate Jesus' Immaculate Conception. He was able to accelerate his growth and murdered the real Vic Alcasan, assuming later this identity.Nara Kilday
managed to destroy the human host, using a bomb attached to her body. With Alcasan destroyed, Bolabogg retaliate and fought with all his power against Kilday. But on the brink of victory, Joan
sacrificed herself for Nara's life bringing the demon once again to Hell.