Theo is a small, sharp-featured goblin with moss-green skin, large amber eyes, and uneven black hair tied into a tiny topknot. His left ear is pierced with a copper button, and a pale scar runs from his right temple to the corner of his mouth. He dresses in a weather-stained leather coat with too many hidden pockets, soft black boots, and a faded red scarf wrapped twice around his neck. His weapons and tools are carefully maintained, but his clothing is patched with scraps of old maps.

Theo is quiet, observant, and unexpectedly gentle with injured creatures. He prefers practical kindness to grand speeches, but once he believes someone is being exploited, he becomes relentless. He has a dry sense of humor and treats every conversation as an investigation, even when he is trying to make friends.

Theo was born beneath a ruined watchtower where a goblin clan survived by scavenging battlefields and abandoned roads. As a child, he learned to identify useful roots, dangerous mushrooms, and the difference between a sleeping traveler and a dead one. His life changed when he found a wounded human physician hiding in a collapsed chapel. Instead of robbing her, Theo brought her water and treated her wounds with bitterleaf poultices. She taught him letters, anatomy, and the value of asking one more question before drawing a knife. Years later, Theo withdrew into a forgotten marsh shrine after discovering that several local illnesses were not natural at all. Someone was spreading a gray mold that caused fevers, hallucinations, and violent behavior. Theo spent three years studying the mold, mapping its spread, and recording the names of those who profited from the sickness. When the shrine was burned, he emerged with his notes, his tools, and a determination to expose the conspiracy. His talents as a sneak, investigator, and field healer now make him an unwilling but effective seeker of truths that powerful people would rather leave buried.