Acheron is the longsword Cervantes used during his days before he obtained Soul Edge (Female). In Soulcalibur IV he used it again for obvious reasons, his half of Soul Edge (Female) merged back with Soul Edge (Complete). The sword has a wide blade that has a gold guard, although Cervantes' concept art shows it with a dark gray guard. Nonetheless, it is a well balanced weapon. It appears in Soulcalibur, Soulcalibur II as an extra weapon, and Soulcalibur IV and Soulcalibur V as his primary weapon.