Malthael (Diablo)

Malthael is the final boss of Diablo III in the expansion pack Reaper of Souls. Once brother of Imperius, the Archangel of Valor, Malthael held the Mantle of the Archangel of Wisdom. However, upon the destruction of the worldstone, Malthael disappeared, leaving no trace of his being. Some angels had theorized that he was still in the war zone known as Pandemonium, all whilst his disciples had searched for their mentor, the Archangel of Wisdom. Eventually, they found Malthael, who had changed.

Malthael gained an interest in the souls of humans, and after decades of study, he came to the realization that all humans, because of their association with the Nephalem (angel-demon hybrids), that all should die, having their souls ripped from their bodies, and trapped within Pandemonium, mainly used to strengthen his power to repeat the cycle. All of his disciples had decided to join their mentor, becoming a breed of evil angels known as Reapers. It was from then on that he gained a new name, dropping his title as Archangel of Wisdom and gaining the title Angel of Death.

Appearance
Malthael looks akin to a regular angel, aside from the blue color of his armor and much larger hood, wielding two sickles. His armor appears much similar to Itherael, the Archangel of Fate, in which it is made from cloth of some type, over the much larger armor of Imerius or Tyrael.

Manifestation
Throughout all of Act V, the player talks to Malthael via his visions.

Teleportation
During the fight, Malthael will teleport all around the arena.

Power Increase
When Malthael gets to half health, he will embrace the Black Soulstone, granting himself major boosts.