>>11850630It was originally just plush dolls being made to smack each other by a bored kid in his bedroom (represented by Master Hand). I mean, the Smash emblem was meant to be the frame of the kid's bedroom window.
Melee got rid of the bedroom and turned them all to trophies inexplicably come to life to make it seem more serious. Master Hand is now an entity of creation (with Crazy Hand introduced as its destruction-fueled opposite), and Giga Bowser just comes out of nowhere to be bigger and badder. Brawl doubles down on the "epic crossover of destiny" aesthetic with the whole Subspace storyline, Ultimate further so with World of Light.