The Masters of the Universe minicomic "The Battle of Roboto" was unsurprisingly packaged with the Roboto action figure. This comic takes a very different route from the character's origin in the cartoon; Man-At-Arms being the one that creates Roboto in this story. The heart being the key to Roboto's goodness is a rather ridiculous plot device, but in a strange way it actually works. Interestingly, the action figure came with no heart, even though the minicomic focuses on that aspect of his character throughout. Also, note the color scheme of Roboto in these panels; he is colored very different when compared to the action figure and cartoon model.
(click on the image to see it at full-size)