Someone who fights (or is fighting)
Battler
Belligerent
Fighter
Scrapper
Mortal
Individual
Person
Somebody
Someone
Soul
Gouger
Grappler
Hell-kite
Hell-rooster
Tough
Master
Matman
Mauler
Boxer
Victor
Pugilist
Skirmisher
Withstander
Wrestler
Brawler
Street fighter
Superior
Swordsman
Butter
Defender
Fencer
Gamecock
Gladiator
Combat
Engaging in or ready for combat
Military