Denver Pop Culture Con is bringing “Shazam!” to Denver this summer — both of them. The comics, sci-fi and fantasy gathering, which returns to the Colorado Convention Center May 31-June 2, today announced it will host actors Zachary Levi and Asher Angel at the event. Levi plays the title character in the well-reviewed DC Comics adaptation of “Shazam!,” released April 5, while Angel plays the boy who transforms into the red-suited superhero (Billy Batson). “That will make two generations of Shazam!