J

The man known as J is an American boxer and master of the Mach Punch technique. In the manga, J is a student of the U.S. Annapolis Naval Academy. In the anime he is a member of the SPA (Super Police Academy). ~!After losing to Momo in a "Picaresque Match" (a dangerous variation of boxing that involves spiked iron gloves), J enrolls at Otokojuku to "master the madness" of the school and . Later in the manga his full name is revealed to be King Battler, Jr., son of the legendary boxer King Battler.!~