types:
brawler
a fighter (especially one who participates in brawls)
butter
a fighter who strikes the opponent with his head
gladiator
(ancient Rome) a professional combatant or a captive who entertained the public by engaging in mortal combat
gouger
an attacker who gouges out the antagonist's eye
mauler
a fighter who batters the opponent
skirmisher
someone who skirmishes (e.g., as a member of a scouting party)
street fighter,
tough
someone who learned to fight in the streets rather than being formally trained in the sport of boxing
bantamweight
an amateur boxer who weighs no more than 119 pounds
featherweight
an amateur boxer who weighs no more than 126 pounds
flyweight
an amateur boxer who weighs no more than 112 pounds
lightweight
an amateur boxer who weighs no more than 132 pounds
middleweight
an amateur boxer who weighs no more than 165 pounds
puncher
someone who delivers punches
sumo wrestler
a wrestler who participates in sumo (a Japanese form of wrestling)
welterweight
an amateur boxer who weighs no more than 148 pounds