Played by: Jean Reno
There are many reasons to root for Léon during The Professional, despite the fact that he’s a violent killer, but it’s his relationship with a young girl named Mathilda (Natalie Portman) that really makes him stand out. He takes the girl under his wing after her own family is killed, and he teaches her the ways of the hitman, which would come in handy later on in the film.
Léon also has the distinction of coming up with some of the most brutal and unique kills on the list. He strangles, hangs, blows up, and shoots anyone who gets in his way. When the greatest love in a dude’s life is a houseplant, don’t expect him to care much about the human race.