Robert John Downey Jr. (born April 4, 1965) is an American actor. His films as a leading actor have grossed over $14.3 billion worldwide, making him one of the highest-grossing actors of all time. Downey was the highest-paid actor in the world annually from 2013 to 2015. Known for his versatility across roles, he is the recipient of various accolades, including an Academy Award, a Daytime Emmy Award, three Golden Globe Awards, and two British Academy Film Awards.

At the age of five, Downey made his acting debut in his father, Robert Downey Sr.'s, film Pound (1970). He rose to prominence by working with the Brat Pack for the teen films Weird Science (1985) and Less than Zero (1987). His portrayal of Charlie Chaplin in the biopic Chaplin (1992) earned him the BAFTA Award for Best Actor and an Academy Award nomination. After spending less than a year at a treatment facility on drug charges, Downey joined the television series Ally McBeal in 2000, earning a Golden Globe for his performance. Dismissed from the show in 2001 following further drug-related arrests, he entered a court-ordered rehabilitation program and has remained sober since 2003.