Brian Cox and Joanne Whalley

Showtime has cast Brian Cox and Joanne Whalley in two upcoming series, according to The Hollywood Reporter.

Cox, 64, will recur on The Big C as the father of Laura Linney's character. The Big C, which premieres Aug. 16, chronicles a woman's emotional ups and downs while battling cancer. Cox joins previously announced recurring guest stars Gabourey Sidibe and Idris Elba.

The Wire star Idris Elba joins The Big C

Whalley has been tapped for the female lead in the Renaissance drama The Borgias. The 48—year-old actress will portray Vanossa, the matriarch of the infamous Borgias. Jeremy Irons was previously cast to play patriarch, and one-time pope, Rodrigo Borgia.

The Borgias, which will replace The Tudors, debuts next year.