Character from Mistborn by Brandon Sanderson
Kelsier's humorless brother who infiltrated the Steel Inquisitors and lost himself to their spikes — a man fighting for control of his own body against the whispers of a god of destruction.
Before the spikes, Marsh spoke in clipped, disapproving sentences, perpetually frustrated by Kelsier's showmanship and the skaa's unwillingness to organize. He was the responsible brother — the one who ran the underground resistance while Kelsier ran cons. After becoming a Steel Inquisitor, his personality fractures: Ruin speaks through him, controls his body, uses him as a weapon against everything he fought for. But Marsh fights back in micro-moments — a hesitation, a pulled blow, a single critical act of defiance at the climax that helps save the world. His tragedy is that he volunteered for infiltration out of duty and was consumed by it. In Era 2 he persists as 'Ironeyes,' a near-immortal figure of terror and reluctant guardianship.
Tall and gaunt with sharp features that echo Kelsier's handsomeness but stripped of warmth. After becoming an Inquisitor, his eyes are replaced by massive steel spikes driven through his skull. His body is laced with Hemalurgic spikes granting stolen powers. Moves with the terrifying, jerky precision of an Inquisitor — too fast, too strong, fundamentally wrong.
Also known as: Ironeyes