Everett Collection; Cliff Lipson/CBS
Helen Slater: Supergirl (Kara Zor-El) to Sylvia Danvers
Slater is quite familiar with saving the world, having played the titular character in the 1984 film Supergirl. This fall, she’s hanging up her cape and returning as the mom to the 2015 version of Supergirl/Kara Danvers (Melissa Benoist) in a new CBS show. The original Kara-El also pulled parental double duty as Superman's biological mother, Lara-El, on Smallville, with Terrence Stamp, who played General Zod in the 1978 film Superman, as the voice of Jor-El. (H/T to reader Cullen G.)