Mechakoopa

The battle is won, the Koopalings are beat, and every level has been seen through to completion. You make your way to the final boss battle atop Bowser’s castle, where he fights you inside of a giant floating cup with a clown face on it. As the battle begins, he unleashes the first of his many weapons: a wind-up robotic toy designed to look like a Koopa Troopa.

This is a Mechakoopa, robotic Koopa Troops seen almost exclusively in the final levels of the games in which they appear. Sometimes they are weapons used exclusively by Bowser, sometimes they wander independently, breathing fire and discharging electricity at nearby opponents.

As a fighter, Mechakoopas are light and quick, but with lacking aerials. Its moves will pull from the various attacks shown throughout the games: fire breath, electric discharge, booster rockets, and so on; mostly using its robotic parts to its advantage.

Likelihood rating: Never gonna happen