Giegue did it. He defeated Ninten, Lloyd and Ana. He took over the world and destroyed any humans he found. Most have been eradicated however some still remain and one day while you were walking around trying to find supplies in a abandoned store. You heard something enter the store. You turned around and saw him face to face.

Giegue: "Another pathetic thing. You have one chance to convince me why I should spare you. Most you pathetic pests beg to be spared. So I want to see what you'll do."