I'm pretty sure it's from the 80s as I remember watching it as a kid. The main guy was tall and skinny with blonde hair and a beige (I think) hat. He also may or may not have been a robot. I think I remember it showing scenes of the guy with his skin off and robotics revealed, kind of like Astroboy. He was a friend to a younger kid though and I think they may have traveled through time but I forget. They definitely spent a lot of time in a high tech 80s computer room place though. Is this ringing any bells for anyone?