Willy was a warrior who had entered Glaive Castle, and was captured by Julius. Even after he was made a slave, he had been secretly investigating Dark Lord's plans. For the past few days, he had a look of desperation in his eyes.
When Sumo returned to the slave quarters after slaying Jackal, he finds Willy, his only friend, laying on the floor barely alive.
Willy tells him that they should tell the Gemma Knights that Mana is in danger. Before dying, he mentions that Bogard can be found at the falls. When Sumo tries to talk to Willy again, Sumo will say that he'll avenge him.
- Before the battle with Dark Lord in the Japanese version, Sumo once again vows to avenge Willy. In the North American translation, Willy is never mentioned again after Sumo's escape, despite the fact that they were friends.