According to Deadline, Actress Rhona Mitra has joined the cast to play Mercy Graves, in Supergirl’s fourth season. Mitra has been tapped for a recurring role.

Based on the iconic DC character, Mercy Graves is an ex-CADMUS agent who has always believed in human exceptionalism. But with both Lex and Lillian in prison, Mercy is stepping out of the Luthor shadow and running her own show. With her biting wit and lethal brawn, Mercy steadily becomes a key figure in National City’s growing “human-first” movement.

Rhona Mitra joins cast Supergirl as Mercy Graves

Rhona Mitra is known for her role in “The Last Ship” and “Strike Back”.

Supergirl returns Sunday, October 14 at 8 PM on The CW.

For more information on Supergirl and the other exciting new DC Comics Television series, stay tuned.

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