Scorched

From Into the Wilds Wiki

Within the Red Ork Tribe, the Scorched are black orks, larger than their regular counterparts, that seem to burn with a great internal heat. These creatures are undead in nature, but appear to function benign guards within the settlement unless provoked.
Orks become Scorched through some form of ritual to Nadak, the island protector that resides within the volcano (Mount Nadak) that the Red Ork Tribe settlement is at the base of.
Given their fiery patron, these creatures seem impervious to the effects of fire.