That was over 6 years ago in 2015.
Today he is 60, and has starred in 75 movies in total, 4 since The Gunman was released.
In The Gunman, I think Sean Penn looks:
The Gunman scores 5.6 out of 10 on The Movie Database.
Sean Penn's first acting role was as 'Cadet Captain Alex Dwyer' in Taps, released in 1981 when he was 21.