Ghirahim

"I am the Demon Lord who presides over this land you look down upon, this world you call the surface. You may call me Ghirahim. In truth, I very much prefer to be indulged with my full title: Lord Ghirahim. But I'm not fussy." - Lord Ghirahim

Ghirahim is the main antagonist of  The Legend of Zelda: Skyward Sword.