Sonia appears in the Pokémon: Twilight Wings miniseries, set primarily in the Galar region, as a supportive figure connected to characters including Nessa and Leon. In Episode 4, "Early-Evening Waves," she meets Nessa at a Battle Café following Nessa's Champion Cup defeat. During their conversation, Sonia advises Nessa to base future plans on personal desires rather than external pressures, demonstrating her thoughtful nature and understanding of professional challenges. Her connection to Leon is shown in Episode 6, "Moonlight," through a phone conversation while he ascends Rose Tower, indicating their established relationship. This connection continues in Episode 7, "Sky," where Sonia watches Leon's televised battle against Raihan alongside her partner Pokémon, Yamper, revealing her interest in major Pokémon League events. In the special episode, "The Gathering of Stars," Sonia has succeeded her grandmother, Professor Magnolia, as the Galar region's primary Pokémon Professor. While preparing for an interview at the laboratory, she encounters Hop and gives him an invitation letter from Leon for the Galarian Star Tournament, confirming her transition into a mentorship role. Yamper consistently appears alongside her, notably during the television viewing of Leon's battle and her departure for the Crown Tundra. The series does not delve into her background beyond these interactions.