Abyss (アビス, Abisu) is a character designed for the Soul series. Abyss is one of two final bosses in Soulcalibur III, the other being Night Terror. Abyss made his first and, to date, his only appearance in SC3. Abyss is an altered form of Zasalamel, and thusly, his weapon "Irkalla" is available to Zasalamel in Soulcalibur IV.
Abyss was created by Zasalamel's combining and absorbing of the two swords, Soul Edge and Soul Calibur, into his body as a method of obtaining true death.
He hid behind the scenes during the battle between the cursed sword and the spirit sword, appearing only when their powers reached their zenith. Then, using a secret art, he connected his body to the world of the abyss and created a jet-black magnet that absorbed all forms of energy. His plan was to use this to draw out the essences of the two swords and take them into his body. The unexpected result was his mutation into Abyss, and an apparent loss of control over his actions as another, unexplained force began to take control.