Rossy is one of the dogs who helped John, Hiro and Reika escape. After Hiro had left with Reika to look for Weed's group; Rossy, Lefty and Tommy were left with John to fight against Matsu's group. Despite the overpowering numbers, they fought bravely with John, as their fathers were Ōu soldiers in the battle against Akakabuto. However, this failed as Matsu's pack outnumbered them. Rossy is the third one to be pinned down by the enemy soldiers. His throat is ripped open by Matsu's minions. Before he dies, he manages to tell John that it was a honor to fight with him and his last wish of dying as a soldier of Ōu's supreme commander was fulfilled.