Nathan Fillion Clarifies Guy Gardner & John Stewart's Next DC Reunion After Lanterns Finale

Published Nov 11, 2026, 3:04 PM EST Maggie Dela Paz is a News and TV writer at ScreenRant. She has nearly a decade of professional experience in writing entertainment articles about a wide range of topics, including movies, television, music, anime, streaming, and more. Following the release of the Lanterns season 1 finale, Nathan Fillion’s Guy Gardner and Aaron Pierre’s John Stewart will reunite soon in another DC Universe project. The HBO series revealed that the Guardians of the Universe tapped Guy as Hal Jordan’s (Kyle Chandler) replacement after the latter was imprisoned. During his first appearance in episode 6, “Bad Optics,” Guy and John have an ongoing rivalry because John was actually the original choice to replace Hal. The Lanterns season 1 finale ended with them dividing duties after a tense standoff over John's unsanctioned ring and battery. They ultimately agree that Guy will remain as Space Sector 2814's official Green Lantern, while John takes over his Earth duties. In the recent Once We Were Spacemen podcast, Fillion assured that audiences would see Guy and John together again soon. He and Pierre have already filmed their scenes for James Gunn’s highly anticipated Superman sequel, Man of Tomorrow. This marks the Castle actor’s third live-action DC movie, following 2021’s The Suicide Squad and 2025’s Superman. As for Pierre, Man of Tomorrow will serve as John’s live-action feature debut. Nathan Fillion: “I got to work with some incredible actors [on Lanterns], Kyle Chandler and Aaron Pierre. Aaron Pierre, with whom I worked again later. So we had already had a rapport established when we worked together later again in Superman Man of Tomorrow, which [to Alan Tudyk] you were also in. I don’t know anything I’ve ever done that has paid off in such a huge way when I did so little.” Even before Fillion landed the DC role in James Gunn’s universe, he already had experience playing Green Lantern. He voiced Hal Jordan in six animated movies, including 2011's Green Lantern: Emerald Knights, 2012's Justice League: Doom, 2013’s Justice League: The Flashpoint Paradox, 2015’s Justice League: Throne of Atlantis, 2018’s The Death of Superman, and 2019's Reign of the Supermen. He also lent his voice to Steve Trevor in the animated Wonder Woman film, which premiered in 2009. Man of Tomorrow is written and directed by James Gunn, who recently stepped down as DC Studios co-CEO alongside executive producer Peter Safran. The 2027 sequel follows the unlikely team-up between Superman and Lex Luthor, who are forced to work together to fight a much bigger threat. Rearrange the movies into the correct US release order. It will feature returning cast members David Corenswet, Nicholas Hoult, Rachel Brosnahan, Milly Alcock, Isabela Merced, Edi Gathegi, Fillion, Skyler Gisondo, and Frank Grillo. Joining them are Xolo Maridueña as Blue Beetle, Aaron Pierre as John Stewart, Lars Eidinger as Brainiac, and Adria Arjona in an undisclosed role. Following the shocking exits of Gunn and Safran, the future of the DC Universe has become uncertain. In a recent report, this massive shake-up in DC Studios' leadership will reportedly dismantle Gunn's long-term plans for the DC Universe. Despite this, upcoming DCU projects that have either been filmed or are in production are still expected to move forward, including Man of Tomorrow, The Batman Part II, Creature Commandos season 2, and HBO Max's The People v. Gorilla Grodd. While Lanterns received positive reviews and strong streaming numbers, its season 2 renewal remains in limbo. While waiting for Man of Tomorrow’s debut on July 9, 2027, all eight episodes of Lanterns season 1 are on HBO Max. Release Date July 9, 2027 Director James Gunn Writers James Gunn Producers Peter Safran, James Gunn Prequel(s) Superman Franchise(s) Superman, DCU Cast Nicholas Hoult Lex Luthor Rachel Brosnahan Lois Lane Man of Tomorrow marks a new chapter in the Superman saga, as Superman teams up with longtime adversary Lex Luthor to face the formidable villain Brainiac. Main Genre Superhero Executive Producer(s) Lars P. Winther