Denise Michelle Crosby is best known for portraying Security Chief Tasha Yar in Star Trek: The Next Generation as well as Yar’s own daughter, the half-Romulan Commander Sela.
She is also known for her numerous film and television roles and for starring in and producing the film Trekkies.
Crosby is also known to Walking Dead fans as Mary, a member of the cannibal group from Terminus. Crosby debuted at the tail end of season four, and finished her story arc at the beginning of season five.
Crosby can currently be seen in the Showtime series Ray Donovan.