You're going to have to tone some of that down to fit the game, but the general principle should be fine!

In terms of an AU, if you'd like to play him as lying low, you're welcome to make him a criminal from Caldera or something who moved to Union where no one knows him for a fresh start. If you want to be part of one of the 'villain' groups like Team Evolution or Gigas, that might require more discussion with us and you can feel free to add us on Plurk and discuss!

EDIT: If those names don't make sense, please refer here and here.