ok because the question of Mario (and the rest of the cast’s) age has been going around again, i thought i would gather all of the information i have at his moment and make a post. Also thanks for @hype-kaminari-kun for the idea/ helping me out :D
First of all, here is all of the evidence for what Mario and crew’s canon age is (under the cut bc it gets long):
Just a little something i noticed when looking at some really big Mario Party Star Rush renders:
The Mario Bros. and Wario Bros. hats are made out of completely different materials. While the Mario and Luigi have the embroidered emblems with sewn on borders, Wario and Waluigi have these felt-like patches, and it appears to be glued on instead as there is no stitches and the fabric is slightly raised.
The even stranger detail is that their hats are a different texture to the Mario Bros. With their caps being a fuzzy material, while the original hats are made out of a more a cotton twill. Over all the Wario Bros. hats feel cheap and newer, which is very suiting. Here is Luigi’s and Waluigi’s for comparison: