Searxng/Firefly TV series tv TV Nathan Fillion announces a new animated Firefly series with the original cast. The Browncoat reunion is finally here. March 16, 2026 AceShowbiz - Firefly fans received exciting news this weekend as Nathan Fillion announced the development of a new animated series set in the iconic sci-fi universe. The reveal was made during a live taping of his podcast, Once We Were Spacemen, at Awesome Con in Washington, D.C.