Eugene

General Eugene (ユージン) is the head of the Salamander armed forces, he was considered the strongest player in ALfheim Online until he was defeated by Kirito during the Conference of the Cait Sith and Sylph lords.

He uses the legendary Demonic Sword Gram as his weapon.

Background
He is Lord Mortimer's brother in-game and possibly in real life as well.

Later, he is shown to be the head of the Aincrad Clearing Force. He uses the second most powerful weapon in ALO, the Demonic Sword Gram.