Who was Robert De character in Heat?

You're likely thinking of Neil McCauley, the character played by Robert De Niro in the film "Heat".

Neil McCauley is a professional thief who leads a crew of highly skilled criminals. He is a meticulous planner and a master of his craft, but he is also a man with a strong moral code and a deep sense of loyalty to his crew. His character is often seen as a complex and compelling antihero.