Thanatok Ynigós, once known as Sun-Walker, The Curse Breaker, was the first great rampart in the way of the Undead Empire. A being in possession of Devouring Life, the polar opposite of Champion Loimos's Festering Death.
Thanatok Ynigós was a being of pure life force, a natural enemy to us, the scions of Death.
He possessed the same innate traits and abilities as Loimos, but in reverse. Loimos has access to Primeval Rot, while Thanatok Ynigós had access to Primeval Vigour. The main difference between these abilities is not their capabilities, but how they were used and wielded by each of the two combatants.
