I been working on this for this Sonic story but I did wrote and worked on an idea for Mario (you know, the plumber) having a Jojo stand based on the Jojo-Mario joke. Now oppose to just simple "Ooo Mario with a Jojo stand", I wanna flesh it out to more of less a proper thing which lead to me this:

Mario's stand that is named "Allstarman" is an extension of Mario's fighting/feat abilities that is emphasized, he works like a pre-time stopping Star Platinum

This means that this stand can use Mario's power-ups and give a opposite effect by emphasizing Mario's own abilities/feats

That's what I got so far with it as its still in it's early stages