Will Arnett was 47 in The Lego Movie 2: The Second Part when he played the character 'Batman (voice)'.
That was over 5 years ago in 2019.
Today he is 54, and has starred in 73 movies in total, 10 of those since The Lego Movie 2: The Second Part was released.
In The Lego Movie 2: The Second Part, I think Will Arnett looks: