Zebub was a Tsutsaroth demon commander who fought for Zamorak during the early God Wars. He appears in a flashback during Children of Mah. Zebub is also mentioned in the FunOrb strategy game Armies of Gielinor, the lore Twice Burnt, and Zemouregal's memory.
Zebub was present during Zamorak's attempt to usurp Zaros, as shown in Kharshai's memory of the event. He was angry about having been pulled from the front lines, and denied any knowledge of a ballet dedicated to his destruction of the city of Onkhara, though he warmed to it when Kharshai suggested that Zamorak liked it. The ballet itself is described briefly in the lore Twice Burnt.
After Zaros' fall Zebub entered Zamorak's service. He appears in Armies of Gielinor as an enemy in the first level of the Saradomin Strikes campaign: Deus Ex. He and his soldiers attempt to invade the island of Entrana on behalf of Zamorak, but are defeated by the Saradominists led by Commander Zilyana. Whether Zebub is killed or merely defeated is unknown.
- Zebub's name may be a reference to the demon Beelzebub.