Princess Peach

From Yb Timeline

History

...

After seeing all the chaos and harm that had been going on, Peach decided to host a party so that the YB could relax and enjoy themselves for a little while. Unfortunately, when she gave a speech at the party Metal Top revealed to be there in hiding with the Beanstar, which awoke from her voice. It then raised Peach's Castle into the sky with a giant version of itself and locked Peach up in her room.

For some reason Metal Top put off wishing for control of Star World, and when it did a sudden shudder of the castle made it lose the Beanstar through a crack in the wall. It went looking for it and before it returned the YB made it to her room. Just as they did Metal Top blasted into the room and attacked them, but the YB now had the Star Rod and used it to destroy Metal Top and return Peach's Castle to the ground.