Belphegor was a servant of Diablo. During the Eternal Conflict, she commanded Diablo's siege demons in an attack against the Pandemonium Fortress. After the disappearance of the Worldstone and stalling of the Eternal Conflict, she apparently remained in Pandemonium.
Belphegor, Siege Runekeeper is a Super Unique Warscarred Ravager found in Path of War in Act V during The Battle Fields of Eternity quest in Diablo III. She attacks alongside a horde of Marauders, Ravagers and Firewings, and in addition has Plagued, Thunderstorm and Jailer affixes.
- In demonology, Belphegor is one of the seven princes of Hell.
- She's the only Ravager specifically stated to be female, establishing that this type of demons may have a gender.