Katelyn Nacon, who plays Hilltop medic Enid on “The Walking Dead,” wants to suit up as DC Comics’ “Teen Titans” superheroine Raven. “Well, it’s not Marvel — mostly because I feel there’s not a lot of young Marvel girl superheroes, even in the comic books. And if there are, they’re not very well known,” Nacon answered during a Q&A at San Jose Fan Fest when asked which Marvel superhero she’d like to play.