Left alone by John and Dean, Sam learns that he need to defend himself. So he trained himself to be a solo hunter. Despite being young, he became is very strong nad very skilled in martial arts and using weapons. Sam became the youngest and deadliest hunter then over the years he got through some transformation into a Powerful Unstoppable killikg machine. Armed with these Supernatural abilities, Omnideadly guns he become this world protector with the nickname: The Saint of Killers