Nathan Zellner is a former voice actor at Rooster Teeth Productions and is best known for providing the voice of Andy the Bomb in The Blood Gulch Chronicles and Season 11, as well as his Epsilon counterpart in Season 9. He also serves as the voice of the Alien in Season 4 and the Resistance Sniper in Season 10. He also appeared in several Rooster Teeth Shorts. Nathan was responsible for certain visual effects in Red vs. Blue, such as the F.I.L.S.S. console located in the Freelancer Offsite Storage Facility in Revelation.