‘Supergirl’ casts Cyborg Superman and Alex Danvers

David Harewood and Chyler Leigh have been added as series regulars to CBS’s “Supergirl” pilot, based off DC Comics, Variety has learned.

Harewood (“Homeland”) will play super-villain Hank Henshaw, a former CIA agent who now runs the Department of Extra-Normal Operation, which tracks extraterrestrial threats on the planet Earth. In the DC Comics world, Henshaw is known as Cyborg Superman.

Leigh has been cast as Kara Zor-El’s (Melissa Benoist) foster sister, Alex Danvers. Fascinated by Kara’s — aka Supergirl — powers from a young age, Alex developed a lifelong obsession with science, which inspired her to become a doctor.