In a new interview with TVGuide.com, Nathan Fillion talks briefly about his role playing Green Lantern Guy Gardner in James Gunn’s upcoming “Superman” movie.
You have developed a close relationship with James Gunn over the years, and you are part of his overhaul of the DC Universe, starting with the forthcoming Superman reboot. What sets your Guy Gardner apart from all of the past iterations of Green Lanterns?
Fillion: He’s a jerk! What’s important to know is, you don’t have to be good to be a Green Lantern; you just have to be fearless. So Guy Gardner is fearless, and he is not very good. He’s not nice, which is very freeing as an actor because you just think to yourself, what is the most selfish, self-serving thing I can do in this moment? And that’s the answer. That’s what you do in that moment. I think if he has a superpower, it might be his overconfidence, in that he thinks he could take on Superman. He can’t!
You can read the full interview at TVGuide.com.
“Superman” will be in theaters and IMAX nationwide on July 11, 2025, and internationally beginning 9 July 2025, distributed by Warner Bros. Pictures.

This is how Gunn is injecting his own style into the movie… he likes these type of characters, but if I remember in the comics, Gardner didn’t like Superman, but respected him so I think that will be portrayed. It’s been a minute, but I remember around death and return of Superman, this was on full display.