Knuckle

Knuckle is an undefeated boxing champion and the legendary Sun Guardian for Vongola Primo. He possesses enough physical strength to shatter light with his punches. After a tragic accident during a match drove him toward religious devotion, he eventually returned to protect his comrades during their darkest hour. His combat style and weaponry closely resemble Ryohei's, and he relies on immense, overwhelming power in battle.