Season four of Supergirl will see the arrival of a new member of the Olsen family, when actress Azie Tesfai joins the cast as Jimmy’s sister, Kelly Olsen.
Though Jimmy has had various family members in comics throughout the decades, Kelly Olsen is a character original to the TV series. Deadline describes her as “an intelligent and insightful woman who spent time in the military in order to pay for medical school. She’s recently discharged from the military and is currently finishing her training as a psychiatrist. She’s got a large heart and cares deeply about others.”
There’s no word yet on exactly when Kelly will make her debut; Supergirl airs Sundays on the CW.