Margot Robbie's Harley Quinn and 17 Other LGBTQ+ Superheroes

At the 2019 San Diego Comic-Con, Marvel announced that Valkyrie would be the MCU's first LGBTQ+ superhero (though "Thor 4" ended up being delayed so long that other characters made it to screen first). In recent comics, Valkyrie is depicted as bisexual and in a relationship. In 2022's "Thor: Love and Thunder," her sexuality is mentioned, though it isn't intrinsic to the plot.