The Thing (Joe Baker) finds himself having to corral a runaway robot whose programming isn't quite as complete as his creator had intended. Professor Quimby (Paul Winchell) may be absent-minded, but good natured. His creation, though, is a work in progress. Here's "The Thing Meets The Clunk":
It was never really implied that Kelly (Noelle North) was Benjy Grimm's girlfriend in this series, although she and her scientist father (John Stephenson) were the only ones who were privy to Benjy's dual identity.