Read more on fan comments about Fox Mccloud, nice:
A lot of Fox scenes in the movie.
He joins one group of characters and helps them out at about the halfway point in the movie, and has major interactions for the next quarter of the movie. He's important throughout the latter half of the movie, for sure.
Fox matches the style of the Mario animated universe, but is also distinct. He definitely comes off as a cool guy (YES!), even one of the other characters says so, directly. But it's not done is a "look at me" kind of way. It's more of a confidence that knows when to brag and when to simply get things done without saying a word.
Fox remains cool and collected in all but one scene where he has a moment as the visual gag. But it's something I could expect Fox to lose his composure over.
Glen Powell's voice acting for Fox is great. I think Fox sounds like he should. Definitely different from previous voices of Fox, but it's an appropriate voice.
He is given a serious role, and is essential to progressing the story.
Interestingly, he starts off kinda like a Han Solo type character. I enjoyed seeing him on screen.