Solo

Solo is the human form of Rogue. He says that when the player fights his EX form that people attacked him because they were scared of him. So they ganged up on him and hurt him. He had the Ancient Star Carrier in his hand. With it, EM Wave Change was possible, though he never had an EM body. He can Wave Change because he draws his power from the lonely voids in people's hearts, essentially loneliness waves. Why he's so cold toward others is because he's the last living person from Mu. He's also cold to Geo because he's afraid his friends and him might gang up on him and hurt him. Basically, Solo is the last of his kind. Vega says that Solo is so obsessed with reviving Le Mu on his own that it goes to the point of him thinking of not working alone. Hyde says that either way, he won't trust him. His blood led him to deny Hollow's offer of using the Mu matter transporter,"Kamikakushi," saying his blood won't allow help.