Marsh
Biography
Coachman and survivor
Marsh begins as the mushroom coachman whose presence helps Saul preserve transport and supplies during the journey away from Gorsa's fallen tower. Ann identifies his apparent insignificance as a rare advantage: the weak mushroom parasite and its human host have reached a mutually beneficial balance that makes him exceptionally difficult to notice and unusually likely to survive disaster. Saul accepts him into the traveling party rather than treating him as disposable transport. Marsh later settles beneath the Purity Wizard Tower, tends its mushroom forest, and remains part of Rhine City's ordinary working community. (Chapters 444–478, 535–567, 635–665, and 705)
Appearance and personality
Marsh looks like an unremarkable coachman until mushrooms emerge across his body or form the strange vehicles he uses. He is deferential, practical, and courageous enough to follow wizards while relying on concealment rather than combat pride. (Chapters 444–478 and 535–567)
Abilities
His symbiotic mushrooms provide concealment, resilient transport, cultivation skill, and unusual movement through dangerous terrain. They do not make him a conventional combat wizard, but repeatedly let him persist where more conspicuous people become targets. (Chapters 444–478, 635–685)