There was no preconceived look or backstory, and it would appear that I never granted him a history. I remember thinking about how the bots not only contained the normal gear to support their direct powers, embedded in them was the weather-control stuff as well.
He became a rogue because he is not really villainous. He simply likes taking, um, shortcuts, to achieve his goals. I moved him from Infinity both to gain a slot there and to get a redside character onto Exalted.