The Firegut ogres of the Burning Steppes are allies of the Blackrock orcs. They work closely with those orcs, keeping the mineral rich Dreadmaul Rock guarded and the supply lines open at all times.
For a short time they were led by Gor'tesh until he was killed. Gorlop leads the clan currently... until he fell into lava.
All Firegut ogre mobs have [Flamestrike] as a racial ability.
In the RPG
This section contains information from the Warcraft RPG which is considered non-canon.
Their leader is Chief Ogg'ora and their name is spelled as Fire-Gut.
This article or section includes speculation, observations or opinions possibly supported by lore or by Blizzard officials. It should not be taken as representing official lore.
Considering their mound is called Dreadmaul Rock, they could have been a part of the Dreadmaul tribe from Blasted Lands.