Having sacrificed his life as rebel spy Cassian Andor in 2016's Rogue One, to help eliminate the planet-killing Death Star, the Mexican actor is about to don the blaster holster once again in Disney+'s upcoming prequel series.
"I remember living every day as if it was the last," he said of filming Rogue One.
"I mean, I never thought of being part of this universe at all. I was just a fan, and one day I got a call. I thought it was going to be a one-time thing in my life, and I shared it with my kids, and I saw it. I was ready to move on.
"Then I was invited to [return for the show], and it made complete sense. I had so much more to say and do with this role. I just wanted to explore many things that I thought about while I was shooting that a film would never allow you to explore."
Luna was also quick to point out that despite the show's title, Andor provides a platform for many spacemen and women to strut their stuff.
"Even though it's called Andor, it's about a revolution. It's an ensemble. It's about a group of people. It's about community," he noted.
"You'll have the chance to meet many characters you don't know and visit places you don't know existed in this galaxy."
One such face is none other than Genevieve O'Reilly's Mon Mothma.
Andor premieres August 31 on Disney+.