In the original: Roy is a Colonel in what amounts to the military who is tortured by his past. He follows orders and demands the same of others in order to keep up the fascade of being a good soldier, while having plans of his own in order to rectify his wrong-doings. He's stern and strict and completely badass.
In ours: Roy is still tortured but it shows in his belittlement of those around him. He cares a lot about people but is unable to show it without being sarcastic or out-right mean. A major target of his scorn is often Ed because he sees Ed as going down the same path as he did.