William Massachusetts

William Massachusetts (also known as "Mithril Eyes" William) is a prominent character in Log Horizon.

He's an Elf player specializing as an Assassin-Hunter (focused on ranged combat with a bow), and he serves as the guild master of Silver Sword, a powerful raiding guild.

In appearance, he's described as a handsome, princely-looking young man (often with silver/blonde hair and striking eyes), though his short-tempered and impatient personality contrasts with that elegant image—he can be proud, uncompromising, and quick to anger.

In the real world, he's a high-school student named Masashi Nakayama. He becomes involved in the story around the events of the Round Table Council and later developments in Akiba.