On Argus - the former homeworld of Falling into the heart of the mausoleum Auchindoun, Teron'gor gorged upon hundreds of draenei souls, becoming a bloated abomination in the process. More than just an orc now, Teron'gor gave up his old name and has taken a new one: Gorefiend.
Gul'dan has now called Gorefiend back to Hellfire Citadel, allowing Gorefiend to feast upon the souls of those orcs who were not strong enough to survive their fel transformations. Even now more orcs are sacrificed to power Gorefiend's magic, but to what end?[3]