Nicholas Brody is also called Billy.
Carrie Anne Mathison , played by actress Claire Danes , is a fictional character and the protagonist of the American television drama/thriller series Homeland on Showtime , created by Alex Gansa and Howard Gordon . Nicholas Brody . Nicholas `` Nick '' Brody , played by actor Damian Lewis , is a fictional character on the American television series Homeland on Showtime , created by Alex Gansa and Howard Gordon .