Nathan Fillion Announces Firefly Animated Series, First Concept Art Revealed

The cast of cult Space Western "Firefly" (widely considered the best show ever to only last 14 episodes) has been teasing a big announcement on social media for weeks now. Nathan Fillion, aka Captain Malcolm Reynolds, has been filming videos for social media of him knocking on his old co-stars' doors and telling them it's finally time for something. 

At Awesome Con in Washington D.C., seven members of the "Firefly" cast (minus Adam Baldwin and the late Ron Glass) finally delivered the announcement: an animated "Firefly" series is currently in development, with all eight surviving members of the main cast set to return. The announcement, which doubled as a live taping for Fillion and Alan Tudyk's "Once We Were Spacemen" podcast, included a reveal of concept art for the series (see below), created by the animation studio ShadowMachine. 

First concept art for the 'FIREFLY' animated series.

Now in development (without Joss Whedon).

(Source: Deadline) pic.twitter.com/lugThhrFvI

— DiscussingFilm (@DiscussingFilm) March 15, 2026

The series is being developed by Fillion's production company Collision33 in collaboration with 20th Television. Husband and wife writing duo Marc Guggenheim and Tara Butters are attached as showrunners and have completed an episode script, titled "Athenia."

Original series creator Joss Whedon is not involved, but has apparently given his blessing to the project, per Fillion in an announcement video shared on the "Once We Were Spacemen" Instagram. 

Fillion and his castmates also indicated in that video that the series is not a done deal yet. It currently needs a distributor, and Fillion indicated he is about to start pitching it (per Deadline, "The fully assembled package is expected to be taken out to buyers shortly.") Fillion encouraged "Firefly" fans to show their support, particularly on social media, to help the show get picked up.

"Firefly" is set in 2517, when mankind has left Earth behind to colonize several planets in a far off solar system. The system is ruled by the authoritarian Alliance, who recently waged a war to bring the outer planets under their rule. Mal and his first mate Zoë (Gina Torres) fought on the losing side of that war, the Independents or "The Browncoats." After the war, they purchased a Firefly-class cargo ship, naming it Serenity, and now work as criminals on the lawless cosmic frontier alongside a motley crew and passengers.

"Firefly" premiered in 2002 on Fox, but only 14 episodes were completed (and 11 aired, out of the intended order) before it was canceled. The cast apparently noticed from Fox's shabby treatment of "Firefly" that it was likely doomed, but they fell in love with the job anyway. So, too, did many of the people who managed to watch it despite its poor time slot and inconsistent airing schedule.

Thanks to strong "Firefly" DVD sales, the series ultimately got a definitive ending with the 2005 film "Serenity," written and directed by Joss Whedon. Unfortunately, "Serenity" did not perform too well at the box office. Any more filmed continuations of "Firefly" stalled out, and further stories were confined to comics and novels.

However, the "Firefly" fandom has never quite died out; as recently as 2025, "Firefly" became a streaming hit on Disney+. The cast, too, are extremely passionate about the show and remain a tight-knit bunch, hence this endeavor to finally bring "Firefly" back in animated form. Given that it's been more than two decades and the cast are all busy people, an animated "Firefly" season 2 makes the most logistical sense.

According to Deadline, the series — titled "Firefly: Still Flyin'" — will be set between the live-action "Firefly" and "Serenity." In the film, Alan Tudyk's character Hoban "Wash" Washburne met a sad end, so that timeline makes sense for the sake of including Tudyk. In Nathan Fillon's Instagram video where he showed up at Tudyk's house, he pointedly said, "I'm not going to do this without you." 

How the show will account for Ron Glass' character, Shepherd Book (who also died in "Serenity"), remains to be seen.

A true second season of "Firefly" has long been considered a pipe dream, but the announcement of "Firefly: Still Flyin'" feels like a truer possibility than at least since "Serenity" premiered. Still, the news comes at trying times for Whedon fans. On Saturday, March 14, the day before this announcement, it was confirmed that Hulu was not moving forward with a revival of Whedon's first TV series "Buffy The Vampire Slayer." It remains to be seen if "Firefly" will fare better.