User blog comment:JaphethMario/Goomba vs Koopa. Super Mario Rap Battles/@comment-34043399-20171221225638

FLUDD vs Cappy

Wario vs Donkey Kong vs Yoshi

Mega Mushroom vs Mini Mushroom

Mario Kart vs Mario Party

If you do a crossover battle, it MUST be Koopa Bros vs Squirtle Squad