Will Arnett was 47 in Teen Titans Go! To the Movies when he played the character 'Slade (voice)'.
That was over 6 years ago in 2018.
Today he is 54, and has starred in 73 movies in total, 12 of those since Teen Titans Go! To the Movies was released.
In Teen Titans Go! To the Movies, I think Will Arnett looks: