[2] He later moved to New York City and studied acting Lee Strasberg, Curt Conway and Lonny Chapman.

[2] In January 1962, Antonio was a guest artist at Elmwood Playhouse in Nyack, New York, where he directed Enid Bagnold's The Chalk Garden.

These series included The Rookies, The Naked City, Mission: Impossible, Night Gallery, Gunsmoke, The Fugitive, Twelve O'Clock High, The Monkees, The F.B.I., The Defenders, The Mod Squad, Dan August, Cannon, Hawaii Five-O, Bracken's World, The Hardy Boys/Nancy Drew Mysteries, and I Dream of Jeannie.

[3] Antonio memorably guest-starred as the human version of a chimpanzee-turned-human on a popular fifth-season episode of Bewitched titled "Going Ape" and played Barney in The Snoop Sisters.

[5] As a director, Antonio mostly worked in television, notably including: The Flying Nun, The Young Rebels, Banacek, The Partridge Family, The Rockford Files, Owen Marshall: Counselor at Law, Picket Fences, American Gothic, Party of Five, Dawson's Creek, Chicago Hope, CSI: Crime Scene Investigation, and The West Wing.