'Brawler' not 'Infighter'

in·fight·ing /ˈɪnˌfaɪtɪŋ/ Pronunciation Key - Show Spelled Pronunciation[in-fahy-ting] Pronunciation Key - Show IPA Pronunciation
–noun
1. fighting at close range.
2. fighting between rivals, people closely associated, members of a group, etc.; internecine contention.
3. free-for-all fighting.

brawl /brɔl/ Pronunciation Key - Show Spelled Pronunciation[brawl] Pronunciation Key - Show IPA Pronunciation
–noun
1. a noisy quarrel, squabble, or fight.
2. a bubbling or roaring noise; a clamor.
3. Slang. a large, noisy party.
–verb (used without object)
4. to quarrel angrily and noisily; wrangle.
5. to make a bubbling or roaring noise, as water flowing over a rocky bed.

I don't particularly like either name, personally.

That's what I was going to do! >

Based on this, infighter seems to fit better.