A professional boxer is someone who engages in the sport of boxing as a profession. They are often referred to as 'MOVERS' due to their ability to move quickly and skillfully around the ring. Professional boxers must be highly trained fighters, with the ability to use their fists to defend themselves and attack their opponents. They must also have the physical strength and endurance to last through long bouts. Professional boxers must also possess the mental toughness to stay focused and motivated during their fights.