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Born on April 4, 1965, in Manhattan, New York, Robert Downey Jr. was introduced to the world of acting at a tender age by his father, Robert Downey Sr., a counterculture filmmaker. His first role came at just five years old in his father's film "Pound." However, this early foray into the creative arts set the stage for a complicated relationship with fame and substance use, as the tumultuous environment at home, marked by his father's struggles with addiction, left a lasting impact on the young actor.