Tricia Lange debuted as a recurring minor character in the animated series Rick and Morty in Season 3, Episode 5, titled "The Whirly Dirly Conspiracy," which aired on August 20, 2017. Voiced by Cassie Steele, she is depicted with long brown hair, a slender yet voluptuously proportioned figure—particularly noted for her large chest—and a fashionable attire consisting of a low-cut white crop top, burgundy skirt, white nylons, and accessories including a cross necklace, emphasizing her status among the popular clique.

Tricia's personality combines elements of a stereotypical mean girl with unexpected depth, including sensitivity, spiritual inclinations evidenced by her necklace, and a penchant for delivering shocking, explicit one-liners revealing unconventional sexual interests. In her initial appearances, she engages in social rivalries, notably dating Ethan and contributing to Summer's insecurities regarding physical appearance, while associating closely with friends such as Jessica and Nancy. Her interactions often serve comedic purposes, highlighting adolescent dynamics within the show's chaotic narrative framework.

Across later seasons, Tricia appears in episodes including "Rest and Ricklaxation" (Season 3), "Edge of Tomorty: Rick Die Rickpeat" and "Rattlestar Ricklactica" (Season 4), and "Promortyus" (Season 4), with additional cameos in subsequent installments. Notable developments include a post-credits scene expressing attraction to Jerry Smith and hints at quirky fetishes, reinforcing her role as a source of satirical humor rather than undergoing profound personal growth. She remains a peripheral figure, occasionally amplifying family or school-related subplots through her bold and unpredictable demeanor.