'Superman's Guy Gardner Teaser Could Flip a Historic DC ProblemDC's campaign for Superman relies on popularizing lesser-known characters like Guy Gardner to draw interest.
Superman Star Nation Fillion Is Embracing The Green Lantern's FlawsNathan Fillion will portray Guy Gardner, a flawed character, in the upcoming Superman film, drawing parallels to his role as Captain Hammer in Dr. Horrible's Sing-Along Blog.