Tyumi is a broad-shouldered half-orc whose body has been rebuilt from the collar upward and at the right leg with dark iron, brass, leather, and humming arcane mechanisms. His left eye is a living amber eye, while the right is a glass-and-steel lens that clicks softly as it focuses. Jagged tusks frame a metal jaw, and strips of scarred flesh meet riveted plates around his neck. He wears battered chain mail over a military coat, carries a massive butcher's cleaver, and moves with a heavy mechanical rhythm that sounds like distant artillery.

Tyumi is disciplined, grim, and unnervingly formal. He speaks in clipped military phrases and evaluates every person as either an asset, a liability, or a threat. He respects courage, competence, and obedience, but he has little patience for sentiment. Despite his cruelty, he is fiercely protective of those under his command, because abandoning them is the one failure he believes cannot be forgiven.

Tyumi was once a brutal but dependable soldier in a war that consumed nations and left battlefields scarred for generations. During an assault through a ruined village, he stepped on a landmine. The blast destroyed his body from the collar upward and tore away his right leg. His unit left him for dead, but a military surgeon and an artificer attached to the quartermaster corps refused to surrender the remains of such a useful weapon. They rebuilt him with machinery, salvaged armor, and experimental mechanisms. Tyumi survived, though the man he had been was buried beneath metal and orders. When the war ended, Tyumi found that peace offered no purpose. He took up a giant butcher's knife, a tool that reminded him of both military ration yards and the straightforward honesty of slaughter. He became a paladin not from compassion, but from devotion to law, hierarchy, and the belief that obedience gives suffering meaning. He swears that disorder is the true enemy of civilization. To Tyumi, mercy is a resource to be distributed by authority, and justice is best delivered with a clean edge and an unquestioned command.