Alphus is the dominant Persona of Tyrael.
Alphus takes on the appearance of a male humanoid figure, equipped with steel-plated armour and a dark-grey battlerobe, with a shrouded hood to cover his visage. The edges of the armour are highlighted with silver lining, such as his gaunlets, his boots or his hood. A long cape rests on his back, carefully linked beneath the pauldrons. Alphus draws upon a two-handed greatsword in battle.
Being exceptionally powerful in Soulcraft, Alphus personifies Tyrael's practice of both Light and Dark, manifesting the powers together when descending into the fray. Alphus acts as Tyrael's sword in battle, bearing down an onslaught on anyone standing in her way.