Gaal Dornick

Gaal Dornick arrives on Trantor as an outsider: a gifted young mathematician from the water-world Synnax, drawn by a single proof she solved that catches the attention of Hari Seldon himself. Earnest, quick-minded, and unused to the empire's grandeur, she is thrilled and unsettled by the world she's stepped into, unsure yet what it will ask of her.

Llobell plays intelligence as alertness rather than aloofness—Gaal is always visibly calculating, reading rooms as fast as equations, which makes her a believable genius without making her cold. The show hands her the impossible task of grounding cosmic-scale ideas in one person's curiosity and fear, and she carries it by staying human-sized inside it.