That was over 4 years ago in 2017.
Today he is 30, and has starred in 9 movies in total, 1 since American Assassin was released.
In American Assassin, I think Dylan O'Brien looks:
American Assassin scores 6 out of 10 on The Movie Database.
Dylan O'Brien's first acting role was as 'Charlie Brown' in Charlie Brown's Blockhead Revenge, released in 2011 when he was 20.
Still not signed up to Prime? Here's the trick: Sign up, cancel straight away, you'll still get Prime for 30 days. Sign up here