Furnace

What people see is the machine, not the being inside it. A circular torso welds directly to the head unit, all of it plated in brown metal lit by orange grid patterns at the eyes and along the highlights. Each hand mounts a flamethrower, and a single cannon rides at the back. Strip the armor away and only a plasma-based, roughly human shape remains beneath.

Little is on record about where he came from; a plasma creature, he turned to crime and encased himself in combat plating. Isotope conjures him up as reinforcement for Machine Head. He sits out the brawl against Invincible and Titan, instead going for Robot once the Guardians of the Globe show, then trading blows with Dupli-Kate. She fastens Rex Splode's explosive charges onto his plating; the blast rips it open and magma gushes out, dropping him to the floor as he struggles to keep himself contained.

Titan, leaned on by Mr. Liu, later pairs him with Kursk to spring Multi-Paul from lockup. Their fight against the guards is interrupted when Kid Omni-Man turns up beside Invincible, the youngster barreling in despite orders to hold back. Invincible beats them both, flinging Furnace into a wall hard enough to split his casing, and the molten insides slop onto Kursk and scald him. Guards haul the pair off. He does break loose from prison eventually, only for Invincible to corner him off-screen and, it is assumed, put him back in a cell.

Furnace turns his own plasma into a weapon. A pair of cannons lets him fire that burning energy in tighter, more focused bursts than a raw eruption would give. The armor is essential to the whole method, a purpose-built rig that harnesses and aims his heat, converting a volatile molten body into a directed weapon.