Winston Sinclair is a lithe, amber-furred tabaxi with a white muzzle, ringed tail, and bright green eyes that miss almost nothing. His clothes are practical but eccentric, a dark hooded criminal's coat layered over a wizard's neat linen shirt, with ink stains on one cuff and a lockpick hidden in the other. He keeps his spellbook tied to his belt in oilcloth, as if it were both treasure and evidence.

Curious, urbane, and surprisingly gentle, Winston treats danger like a puzzle and people like a responsibility. He is often amused, rarely cruel, and has a habit of helping first and explaining later.

Winston Sinclair was born in a river-port quarter where the respectable people locked their doors at dusk and the thieves locked theirs at noon. As a tabaxi, he grew up being told that curiosity would get him killed, which only made him more curious. He learned early that a quick paw, a quicker tongue, and a talent for slipping through shutters could keep a hungry catfolk alive. By the time he was old enough to shave the fur from his cheeks, Winston could crack a merchant's strongbox, imitate a magistrate's handwriting, and vanish from a rooftop before the alarm bell finished ringing. His turning point came during a job that should have been simple, a burglary of a minor lord's study. Instead of jewels, he found a spellbook, a circle of chalk, and a terrified apprentice begging for help. Winston ran with the book under one arm and the apprentice under the other, then spent the next year teaching himself to read every mark in it. The law still remembers him as a criminal, and the underworld still thinks of him as useful, but Winston has decided that his talent for theft is best used to steal back stolen things, secrets, and sometimes people. He is a wizard now, though the old habits remain. He studies like a scholar, sneaks like a burglar, and treats every locked door as an insult.