The appointed negotiator and ambassador for the Lasombra, Sierra is treated either as a devil's bargain or an honored guest depending on how the viewer feels about the Lasombra's offer to join. They couldn't have chosen a better kindred for the job as Sierra is a smooth unflappable negotiator who is steadily chipping away at the Camarilla's resistance to the Lasombra offer.

Sierra is a young Japanese-American woman in her 20s. She prefers flowing gowns and dresses over business wear, but also wears patterns common to
her heritage in a unique merging of her background. She intends to always look striking, if not fashionable. First impressions matter. As a former member of the Sabbat, Sierra tends to make others uncomfortable by forgetting to imitate breathing, failing to blink, or feeding with a little too much gusto. She has been working on these things at her sire’s order.