+ Colonel is, really, only a half of a whole; he was built directly alongside another Reploid, after all, this Reploid being his sister Iris. She is the innocence to his bloodstained soldier and they acted as a balance for one another. You will (likely) never see it and he will (likely) never show it due to his pride, but he feels extremely empty without Iris with him.
* I say 'likely' because either you may become close enough for him to trust this kind of thing to you, or he might let something slip without meaning to.
- Due to the lack of Iris, he may act a bit off at times. He may seem unusually gung ho to jump into battle despite the odds, his sense of pride and honor may get the better of him, he may become more snappish than he means to be towards people. These are only brief moments, however, and he'll soon snap back to himself. However his big brother complex/white knight attitude will kick into serious overdrive since he's used to having someone to protect and fight for. HI X, HOW'RE YOU DOING.
+ He is really tall. No, I'm serious. He's probably somewhere in the seven foot range. He will, more than likely, be taller than any of your characters ever. He was built as a Reploid of war and his frame definitely shows it, despite being human now.
More later.