He landed three lines in the Florida-filmed feature The Walking Dead, which earned him a Screen Actors Guild (SAG) card, and Calderon was well on his way to earning a living as a professional actor. He had a recurring role in the TV series Second Noah and appeared in the telefilm Summer of Fear and Love’s Deadly Triangle: The Texas Cadet Murder. Among Calderon’s other television credits are guest appearances on Veronica Mars, The Shield, CSI: Miami, 24, NYPD Blue, ER and Profiler. His feature credits include Wes Craven’s Cursed and Venice Underground. Calderon is also active on stage and has appeared with the Actors Circle Theatre. His mentor has been another native of Santurce, Benicio Del Toro.