Alonzo's career began as part of the clean-up crew at television station WFAA in Dallas. However, within a short time he had made himself indispensable, not only building sets, hanging Lights and moving cameras, but also directing cooking and children's shows. Eventually he and actor Hank Williamson created a popular comedy duo: Alonzo became the voice and Puppeteer of the irreverent “Señor Turtle,” who with Williamson as his sidekick, introduced movies and cartoons. In 1956, the show was picked up by station KHJ in Hollywood, where it lasted only 26 weeks. So Alonzo worked for a time as a still Photographer, and as an actor, with appearances in several well-known shows such as Twilight Zone (Season 2 – Episode 12 in Dust as Luis Gallegos, Combat, 77 Sunset Strip and The Alfred Hitchcock Hour."