This TWEWY fanart, I cannot believe it. God, the feels. Although I did read that Joshua appears in Kingdom Hearts (which I suppose the other character is from), I& not very familiar with KH, and so I& sort of a stranger to it.
I would like to see a KH/DBZ crossover where both kids look up to either Goku or Vegeta. And Vegeta would become a heartless, but a special heartless to where his pride allows him to control his now Heartless body.