Released in 1994, Léon: The Professional (originally titled The Professional in the US) is a cult classic action-thriller written and directed by Luc Besson. The film is celebrated for its stylish neo-noir aesthetic and its central, albeit controversial, relationship between a reclusive hitman and a young girl.
Playing the psychotic, pill-popping antagonist Norman Stansfield, Oldman delivered a famously over-the-top performance. Many of his most iconic moments, including the shouted "EVERYONE!" line, were improvised to amuse the director. Production & Controversy
Reno portrayed Léon as a "man-child"—mentally slow and emotionally stunted—to ensure his relationship with Mathilda was perceived as paternal and non-predatory.