Nathan Fillion will play Guy Gardner in HBO’s Lanterns.

He joins the previously announced cast that includes Kyle Chandler, Aaron Pierre, Kelly MacDonald, Garret Dillahunt, Poorna Jagannathan, Jasmine Cephas Jones and Ulrich Thomsen.

Fillion first voiced the Green Lantern character Hal Jordan in Green Lantern: Emerald Knights (2011) and again a year later in Justice League: Doom, followed by Justice League: The Flashpoint Paradox in 2013, Justice League: Throne of Atlantis two years later, The Death of Superman in 2018, and Reign of the Supermen in 2019.

The series, from Chris Mundy, Damon Lindelof and Tom King, “follows new recruit John Stewart (Pierre) and Lantern legend Hal Jordan (Chandler), two intergalactic cops drawn into a dark, Earth-based mystery as they investigate a murder in the American heartland.”