Shan serves as an antagonist within the series, operating as part of the Underground Cooking Society, an organization pursuing control via culinary manipulation. Her disruptive actions directly challenge the protagonists, causing separations within their group at critical moments. For example, her intrusion forces Mao, Mei Li, and Shirou to split from Xie Lu and Leon, redirecting the former trio toward the Chrysanthemum Tower.

Physically, Shan possesses maroon hair reaching her chest and brown eyes. Her distinctive attire features arm warmers, shorts, midriff-exposing clothing, and boots, accessorized with earrings and lipstick. She is often seen armed with a knife or sword, consistent with her confrontational role.

Her involvement in the narrative centers on advancing specific plot conflicts within the series.