I need an ainme with a main charater?

Man oh Man do i have the PERFECT anime for you guy it's called Berserk it's exactly what you just described. Here's a short explanation- Berserk's setting is inspired by medieval Europe. It centers around the life of Guts, an orphaned mercenary warrior, and Griffith, the leader of a mercenary band called the Band of the Hawk. As he ages, Guts changes from a solitary boy into a man who realizes the value of camaraderie. The story contains elements of both fantasy and horror, as it explores both the best and worst of human nature. Both the manga and anime are noted for their heavy violence.