The 54 year-old actor has been super passionate about his role in the DCU, with Fillion loving what a jerk Guy Gardner is in both Superman and Peacemaker Season 2. And the character's bravado combined with his silly hair cut is likely going to create an interesting dynamic on screen.

Guy Gardner makes his DCU debut in James Gunn's Superman, but what are his "all-encompassing" vows he mentions as a member of the Green Lantern Corps?

The actor playing Guy Gardner in James Gunn's DCU has a long history of playing Green Lanterns in animated form.

The last solo Superman movie, 2013's Man of Steel, opened to $116 million domestically, while 2016's Batman v Superman: Dawn of Justice made $166 million at the US box office over its opening weekend, breaking records for a Superman movie. Will Gunn's take on Big Blue match up?

There’s a great deal riding on James Gunn’s “Superman.” Not only is this the initial entry of what promises to be a revitalized, expansive cinematic universe featuring the DC Comics

Gunn nodded to this in his previous DC Comics feature, The Suicide Squad, in which the villain used mind-control to brainwash the public into a mindless, murderous conformity. The deep earnestness of Superman's hatred for the mean hashtag suggests that Gunn has probably been quite aggravated by online name-calling too.

David Corenswet's slightly puppyish Superman radiates a joy in what he's doing, but he’s far from invincible. That lends the film emotional stakes.