Benji had starred in a series of feature films during the 70's, and so it was perhaps inevitable that someone would come along with an idea to bring him to television. Hanna-Barbera did just that, teaming with Joe Camp's Mulberry Square Productions to produce Benji, Zax, & the Alien Prince, a live-action sci-fi series that was part of CBS' Saturday lineup in 1983. Here's a sample, uploaded by magyartv to YouTube:
The series, unfortunately, did not last very long, cancelled after 1 season. Along with NBC's Going Bananas, it was one of the last live-action series that Hanna-Barbera would produce. In fact, none of H-B's live-action product ever went past 1 season. This was one of those cases where CBS could've done something radical to call attention to the show by airing it in prime time as well as on Saturdays, especially considering Benji's background in movies.