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The Combustor Valus is a Cabal Blood Guard Incendior encountered on Mercury where they lurk in the Pariah's Refuge. Their Bounty can be picked up from The Spider as part of a weekly interval. Unlike many of his Red legion brethren, The Combustor Valus would successfully secure a Lost Sector for himself and his forces, yet they would still fall to the Guardian regardless.
The Combustor Valus and some of their allies, more likely two Slug Rifle wielding Phalanxes, will be in the middle of the arena lurking within a Cabal Dome Shield. Within the Dome Shield is a burning area of denial which can quickly sunder health. A way to alleviate this is to kill Honored Incendiors which roam the arena and Dome Shield. Once killed, the Honored Incendior will drop a Shield buff, providing an extremely resilient overshield. The encounter will end with the Valus's demise.
- The Combustor Valus is one of the few known members of the Blood Guard to possess a Cabal rank. This infers either the title is self-proclaimed, or that Blood Guard members can also second as commissioned officers outside of the Guard.