Yeah those aren't exactly boxing terms. You have orthodox (right-handed fighters) and southpaw (left-handed) or unorthodox. The in-fighter is a fighter who attempts to overwhelm his opponent by applying constant pressure. The out-boxer who stays away from opponent and fight with faster, longer range punches. The brawler which you want is a nasty bit of work who just pummels anything in range with raw power and little technique.

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On another note I am curious how you are going to do the attacks. Are you going to use basic boxing techniques  or are you going to make things up as you go. If you use boxing technique there are counters and ways to avoid  hits that allow for devastating combos based on stance and techniques.