Dean Cain ( Lois & Clark: The New Adventures of Superman) played Kara's adoptive father while Erica Durance ( Smallville) played her Kryptonian mother, for example. Shows like Supergirl have a history of casting actors with a super-affiliation in roles. That's become especially true in CW's Arrowverse. Superhero franchises, no matter if they're movie universes or interconnected TV shows, find ways to nod to other superhero properties or the comic books that inspire them. While it might not have been commonplace a few decades ago, Easter eggs are now the fun toppings on superhero meals in media.
