Yoo Sihyuk is a Rank 37 Master Rank Hero (Later Rank 9) and the master of Chae Nayun, known as the Wolf of Valhalla. He is also a master in sword.
Appearance[]
Shoulder-length hair curved up slightly, with a well-trimmed beard uncommon for an eastern man. Has wolf-like eyes and gives off a powerful aura with every step he takes.
Personality[]
Doesn't like being told what to do or what to say, he threw away the speech prepared for him at the conferment ceremony held for Hajin, Suho and Nayun when they defeated the enemies attacking the National Weapons Museum. Doesn't really like crowds or people, "With a moderate arrogance and a lethargic attitude, Yoo Sihyuk pushed back the guests flocking towards him" (Chapter 20 - Connections Pt. 3).