PoH is the leader and founder of the red guild "Laughing Coffin," known for his large knife and catchphrase "It's show time."
His guild was later destroyed by other players in SAO, but his whereabouts are missing. He is presumed to be alive because he wasn't listed as one of the dead players.
On July 6, 2026, Vassago Casals accompanied Gabriel Miller, Critter, and nine other members of Glowgen Defense Systems' assault team during the attack on the Ocean Turtle. As the main control room's console had been locked before they managed to reach it, Vassago logged into Underworld as a dark knight, along with Gabriel as Vector, in order to acquire Alice Zuberg's light cube via the World End Altar in Underworld.