The god of chaos, Zamorak, is often associated with evil. In truth, it is more complicated than this, as Zamorak promotes freedom and self-improvement, rather than relying on tradition. Needless to say, he and Saradomin have been in conflict across the ages.
Zamorak is one of the Mahjarrat, the mysterious creatures from the world of Freneskae. He was recruited to serve under the Empty Lord, Zaros, but he found Zaros’ methods too hands-off for his tastes. Using two of the Elder Artefacts, Zamorak betrayed Zaros and drained him of enough of his power to allow Zamorak to ascend. Zaros, presumed defeated, disappeared into the void where he might rebuild his strength.
News of his usurpation of Zaros is what began the God Wars, the greatest and bloodiest battle in Gielinor’s history. An alliance of Saradomin, Bandos and Armadyl, pushed Zamorak to the brink and caused him to destroy the entire region of Forinthry in a last desperate ploy. This act awoke Guthix from his slumber, and caused him to enact the Edicts that would banish the gods.
Zamorak has tried repeatedly to reclaim Gielinor, using the legions of demons at his beck and call. He has been pushed back by alliances of heroes, yet is always scheming to return and finish what he started.