I remember people saying that genetically, Hat Kid could be Mario and Peach's daughter - but I want to propose a counter-theory
Mario had a moustache in his early years - if we are to believe pre-pubescent facial hair is a genetic trait...

Mario had a moustache in his early years - if we are to believe pre-pubescent facial hair is a genetic trait...
thats genius, it’s like the 1940s equivalent of photoshopping xi jingping’s face onto winnie the pooh except more creative