Zamorak

Zamorak is the god of chaos in Runescape. Though he is thought to be a god of evil by Saradominists (in part due to his betrayal of his god Zaros, which was what resulted to his ascension to godhood in the first place), he in fact has a complex personality.

The reason he betrayed Zaros was that he believed that he was a tyrant. He also has animosity for Seren due to her wiping out thousands of her people (though Seren only did so to prevent Freneskae from being destroyed by Mah)

Followers
Chaos Dwarves

Black Knights

Demons

Hellhounds

Imps

Vampyres

Werewolves

Trivia
He is the only god to have followers in both of the God War Dungeons.