Before joining "The Studio," Hahn builds a long and varied career in television, film, and voice work. She gains wide recognition for her roles in projects including "WandaVision" as Agnes/Agatha Harkness and in comedies such as "Bad Moms" and "Glass Onion: A Knives Out Mystery," establishing her presence across both dramatic and comedic roles.

Hahn also appears in television series such as "The Shrink Next Door" and "Tiny Beautiful Things," where she plays nuanced and character‑driven parts that expand her range beyond broad comedy. Her on‑screen work demonstrates depth across genres prior to her role in the Hollywood satire.

In addition to screen performances, Hahn lends her voice to animated projects and continues to work with a wide range of directors on both mainstream and independent productions, giving her experience with different storytelling styles before starring in "The Studio."

Outside of acting on "The Studio," Hahn continues to pursue film and television roles while participating in media appearances, industry events, and creative collaborations in the entertainment world.