Bruk is a tall, broad-shouldered orc with slate-gray skin, a heavy brow, and one lower tusk chipped from a childhood accident. His dark hair is shaved close on the sides and tied into a short knot at the back. Fine white chalk marks cover his fingers and forearms, remnants of spell diagrams he draws whenever he is thinking. He dresses in a weather-stained scholar's robe beneath a sleeveless leather coat, with a quarterstaff, spellbook, and thieves' tools always close at hand. His amber eyes are unusually focused and alert, giving him an intense, almost unsettling air when he studies someone.

Bruk is intensely observant, dryly funny, and startlingly patient with genuine questions. He treats every problem as a system that can be understood, then becomes visibly offended when reality refuses to behave logically. Despite his arrogance, he is kind to outsiders, prisoners, apprentices, and anyone who has been dismissed as stupid. He speaks to Dreg with the careful tone of a tutor addressing a dangerous but beloved experiment.

Bruk and his twin brother, Dreg, were born during a thunderstorm in a crowded orc caravan that traveled between quarry camps and river markets. Dreg was enormous, cheerful, and spectacularly foolish. He once tried to intimidate a locked door, challenged a statue to a wrestling match, and mistook a written warning for a menu. Bruk, by contrast, learned to read before he learned to throw a spear. He became fascinated by the hidden patterns behind weather, fire, dreams, and the strange glowing symbols scratched into old ruins. Other orcs called him soft-headed for asking too many questions, until he began answering questions no one else understood. The twins eventually joined a small burglary crew in a human city. Dreg handled distractions, usually by being loud and confidently wrong, while Bruk mapped guard routes, decoded wards, and opened locks with mathematical precision. Their luck ended when Bruk discovered that their employer intended to sell an enchanted relic to a cruel warlord. Bruk stole the relic first, destroyed the payment ledger, and helped several imprisoned workers escape. The crew branded him a traitor, the city branded him a criminal, and Dreg proudly announced that Bruk had finally committed a crime worth bragging about. Now Bruk studies wizardry in earnest, hoping to become clever enough to protect people like his brother and reckless enough to do what clever people often refuse to do.