Met Rebellion
From Megaman Mush Wiki
So, this one time, all the Mets on the Robot Master base, which was Skull Fortress at the time we're pretty sure, decided to rebel and take over. They were lead by the Giant Met.
This problem forced all the Robot Masters out of the base for about two weeks. Then Bass and Gemini Man personally fixed the problem by killing at least a hundred mets with plasma and lasers.
