Argus, from Ultima VII Part Two
Argus got into trouble at Monitor when he was in a duel with boy named Flessar from the Leopard command. He allegedly killed the boy, giving him no quarter, although Argus says it was an accident and his command had cleared him of the allegations. Wilfred did not believe this, although he may have been blinded by jealousy of his brother.
The Avatar first met Argus at the Inn of the Sleeping Bull, helping his mother run the place after his father's mysterious disappearance. To do that, he'd even given up being the captain of the Wolf Command. Argus gave the Avatar substantial information about the Sleeping Bull and its inhabitants, while offering the services of the inn.