Robert Downey Jr. was born in Manhattan, New York.

Downey is best known for playing Iron Man in the Marvel film series which 
began in 2008. He won a Golden Globe Award for Best Supporting Actor 
for his role in Ally McBeal in 2000 and another award for Best Actor for his
his portrayal of Sherlock Holmes in 2009. He has also starred in such films
as Zodiac (2007),Tropic Thunder (2008), and Chaplin (1992). He began
acting at the age of five when he played a puppy in the 1970 film Pound,
which was directed by his father Robert Downey, Sr.

Robert Downey Jr. in Tropic Thunder

Downey as Charlie Chaplin

Downey in Iron Man