Amos was born in Austin, TX but grew up in Medway and Holliston, MA. He was a collective and company member at the Tony Award-winning San Francisco Mime Troupe for seventeen years and was also a clown in Le Reve at the Wynn Casino in Las Vegas where he performed over 3500 shows. He wrote, produced and starred in the award-winning short film A Man Wakes Up. After appearing in WandaVision, Amos wrote, produced and co-directed a comedic music video exploring the the rampant fan speculation about his character, Dennis The Mailman. Dennis The Mailman: Just the Messenger is viewable on YouTube.