The pilot episode is entitled, "Tobor And The Atomic Submarine" has a completely new cast from the feature film (save for Robot...er...Tobor - always get these things backwards).
It's actually fairly elaborate for a kiddie show pilot with Missile Launches, Ocean scenes, Atomic Submarines, Battle Ships, Air Force Jets and Pirates! Of course, it's mainly done on the cheap with stock footage and budget sets - Professor Adams' (Arthur Space) work area looks more like a hobby garage rather than a military research center. The kid, Tommy (Tommy Terrell - who apparently never worked again in Hollywood), isn't nicknamed 'Gadget' as he was in the feature. Terrell is bearable as these child actors go. Bruce Cowling is the Professor's assistant (I suppose he's a re-written version of Charles Drake's Dr. Harrison from the original film.
At 26 minutes there certainly is enough incident to keep it watchable, although never really much more than that. In an odd way it's maybe too ambitious for a pilot. Tobor didn't do much more than ride a jeep to Griffith Park in the original and here it's flying on a Missile, saving an Atomic Submarine, performing Bomb removal and beating up Pirates. How were the producers going to top that week after week? Of course, as with the original movie, it's little more than a harmless children's program. Sort of a 'Timmy & Lassie' type show -- 'Tommy & Tobor'.