The Elder God is a major character in the Legacy of Kain series, first introduced in Legacy of Kain: Soul Reaver, and returning in Soul Reaver 2 and Legacy of Kain: Defiance. Though initially a mysterious benefactor and ally to Raziel, the Elder God's portrayal becomes increasingly malicious as the series progresses. By the conclusion of Legacy of Kain: Defiance, he is regarded as the cause of "all of the conflict and strife throughout history", and as the central antagonist of the series as a whole.
Depicted as a sentient, writhing mass of tentacles and eyes dwelling deep below the land of Nosgoth, the Elder God claimed to be the hub of the Wheel of Fate, the preternatural cycle of birth, death and rebirth to which all souls were drawn. However, Raziel later accused the Elder God of merely being a parasite on the Wheel, not its hub. Although this was not confirmed or denied, a consistent fact was that the Elder God was sustained by the Wheel's turning. Thus, as vampires were immortal and their souls did not flow with the Wheel, they, and especially Kain, served as his greatest enemies.