Nathan Fillion told Collider that his top sci-fi franchise is something else entirely, and it has to be something other than Firefly. He kept the name quiet for now, so the reveal is still on the way.
At MCM London 2026, he and his longtime co-star weighed in on a possible Firefly return. Nothing was locked in, there's no firm timeline, just fans keeping fingers crossed.
Fillion also discussed The Rookie. Crossover arcs are in motion with the North spinoff. The show's universe is slowly getting bigger with shared stories connecting the shows.
He recalled a famous-star impression to get out of a ticket. He kept the star's name hidden.
HBO's Lanterns team also chimed in. Fillion's Guy Gardner rubs shoulders with Hal Jordan and John Stewart. The writers gave their reasoning.