The Grudge Ax, combined with the Aya Shield, has been the signature weapon of Lizardman, once Aeon Calcos, since Soulcalibur III. After his faith in his gods faded with his last glimpse of hope, Lizardman cast aside the Xi Sword & Game Shield made for him for his holy mission for the gods, and exchanged it for this set. The name of the axe is likely to be derived from his grudge against Hephaestus. As Lizardman's default equipment, they are evenly balanced and have no special abilities or weaknesses.