Barbara is Jean's younger sister and serves as the deaconess of the Church of Favonius in Mondstadt. She is a 4-star Hydro Catalyst character known for her exceptional healing abilities through her Elemental Burst and Skill. Barbara is a beacon of joy in her community and a self-proclaimed idol whose music has been embraced by Mondstadt's citizens. She is dedicated to making the people of Mondstadt feel better both emotionally and physically. As a support character, Barbara excels at applying Hydro consistently and can be flexibly integrated into various team compositions. Her healing capabilities make her invaluable for keeping teams alive during combat, and she can function as a reaction driver in specialized team builds.