The pilot of the Gundam Deathscythe, Duo is as jolly and happy-go-lucky as Gundam pilots get. He persists in offering his friendship to the initially hostile Heero, eventually winning his antisocial comrade's trust through sheer persistence. But despite his friendly nature, Duo earns his "God of Death" nickname when he takes on Alliance and OZ soldiers in battle.

Prior to Operation Meteor, Duo was part of the space going salvage organization known as the Sweeper Group, and on Earth he is assisted by the Sweepers' seafaring kinsfolk. When there is a lull in the fighting, Duo happily returns to his salvage-merchant's trade. He is distinguished by his black wardrobe, and his yard-long braided ponytail.  He also pilots the Gundam Deathscythe Hell after Deathscythe is destroyed then build better.