Yep it's Leon
36. Leon: The professional, uncut, 1994, Luc Besson
Jean Reno, Gary Oldman and especially Natalie Portman are all great in this movie.
After her family gets killed in a drug bust by a corrupt DEA agent, Mathilda decides to move in with Leon who turns out to be a professional hitman. She coaxes him into helping her take revenge for her little brother.
I would advise to watch the uncut version. It has 22 minutes of extra footage showing more of the relationship dynamic between Mathilda and Leon. It was cut out for the American market to either make it more action oriented or make Mathilda look more innocent.







