superboy

[Grugz]

 a random memory popped in my head today...was there ever a superboy comic where hes a robot existing at the same time as superman?

[Professor Bear]

Golden/Silver Age Superboy had "Superboy robots" he kept hidden in a basement under the Kent farm, and there was a story (can't remember the issue number) where one of the Superboy robots woke up years later and went about doing what it used to do: only in secret because it knew that if Superman ever found out, he'd destroy the robot.  He does, and he does.  Because Silver Age Superman was occasionally a complete asshole.
It was a Superman comic, though, not a Superboy one, and was definitely reprinted in one of those "Greatest Superman Comics" collections DC used to bring out every so often.

[amines2058]

Wasn't there a robotic superboy created during the Death of Superman saga? I will have to google to check as my memory isn't what it used to be. 

EDIT - Wikipedia tells me that there was a Cyborg Superman (Man of Tomorrow) that appeared as one of the Superman who all arise  after the fall of the original Superman??

[Professor Bear]

The Superboy that showed up during the Death of Superman storyline was a Cadmus-created clone of Superman and Lex Luthor - no, I don't know how that works, either.  Probably a robot mixed their jizz in a cup.

Cyborg Superman was a red herring during Death of Superman - you were supposed to think it was a zombie Superman, but it was really a supervillain no-one had seen before (he had actually shown up in Superman comics once, but as a completely different character called Hank Henshaw).

[Hawkmumbler]

And people wonder why DC comics are hard to get into with continuity debates like this!