Kodi Smit-McPhee was 20 in Deadpool 2 when he played the character 'Nightcrawler (uncredited)'.
That was over 6 years ago in 2018.
Today he is 27, and has starred in 31 movies in total, 9 of those since Deadpool 2 was released.
In Deadpool 2, I think Kodi Smit-McPhee looks: