Gary Oldman was 45 in Harry Potter and the Prisoner of Azkaban when he played the character 'Sirius Black'.
That was over 20 years ago in 2004.
Today he is 66, and has starred in 109 movies in total, 61 of those since Harry Potter and the Prisoner of Azkaban was released.
In Harry Potter and the Prisoner of Azkaban, I think Gary Oldman looks: