Guts

Guts is the protagonist of Berserk. He is a tall, muscular man that swings a huge sword called the Dragon Slayer, he has a prosthetic left forearm that has a magnetic grip that also conceals a cannon. Renowned as the "Black Swordsman", he is a former mercenary and branded wanderer who travels the world in a constant internal struggle between pursuing his own ends and protecting those dear to him.