Star Wars is straighest scifi franchise - by a lot.
Superheroes are so gay they were almost banned for corrupting children in the fifties.
Star Trek the original series had Kirk as a woman trapped in a man's body. Look it up!
The George Lucas canonical Star Wars has not a single gay character, and it's about that most manly of subjects - war. It's in the fucking title. And no, C-3PO is not gay, he's a robot. He has no benis.