Your headcanons

SuperDoom said:
Princess Peach isn't a princess; rather, a queen.

Maybe she's called princess for a reason (?)
 
The only reason Baby Rosalina has that outfit is because the characters in the present had it custom-made before using E. Gadd's time machine to get her for MK8.

Also, she never had red hair. It just looked red in the book due to color limitations, kind of like how Arnold in the Magic School Bus is supposed to have blond hair.
 
woah im so glad this exists?????

i have so many mario headcanons but im gonna start with this

dimentio is my small trans son. i love and support him.
 
Mario's father was a barber.

The Mario & Donkey Kong series, takes place in a alternate reality where Mario never split up with Pauline, and Donkey Kong decided to attack Mario like his father. Mario never met Princess Peach, so he doesn't save her at any point, and Bowser is never met because of this. (I've never played any of the games)

Baby Donkey Kong, is the original Donkey Kong, who is also Cranky Kong.

For Diddy Kong to be Donkey Kong's nephew, Donkey Kong would need to have a brother or sister. I believe Candy Kong is Donkey Kongs sister, and not a love interest. While Diddy Kong is only considered Donkey Kong's nephew in earlier games, I consider him a nephew.
 
Princess Zelda said:
Swanky Kong is Donkey Kong's twin brother
That makes more sense. Candy Kong is still the love interest of Donkey Kong, and Swanky is Donkey Kong's brother.
 
Metal Mario is a separate entity from Mario and Pink Gold Peach is separate from Peach. Metal Mario spends most of his time in intellectual pursuit in the Comet Observatory's library while Pink Gold Peach spends her spare time making Metal Mario super uncomfortable and running around naked in the Peach Castle courtyard when no one is looking.