Of his many television guest spots, they included Star Trek: The Original Series ("Elaan of Troyius"), the soap opera Days of Our Lives (Monty, the homeless drunk), The Wild Wild West (Dr. Maitland in "The Night of the Sedgewick Curse"), Planet of the Apes and the title role in Sid & Marty Krofft's Dr. Shrinker, prominently featured on The Krofft Supershow. He also guest-starred as Cassius Thorne in the Buck Rogers in the 25th Century episode "Planet of the Amazon Women". He appeared in two episodes of the situation comedy Bewitched as Julius Caesar (1969) and as Tabitha's tutor, Professor Poindexter Phipps (1970) and on an episode of Tales of the Gold Monkey as the Governor in "Last Chance Louie". Robinson also had a cameo in an episode of Barney Miller, "The Sniper."