Mr. Robot had a cameo role in the Bobcomics. He had to be rescued once from the Death Flower (Not by the ISPCAI) by the first Bob. Mr. Robot in turn helped the first Bob destroy the control room of the Death Flower which exploded, killing Mr. Robot.

Also, Mr. Robot is a robot, if you haven't guessed already.

(In case you're wondering, ISPCAI stands for Infinitiverse Society for the Prevention of Cruelty to Artificial Intelligence.)