Malekith the Accursed

Malekith is the main antagonist of the 2013 Marvel film Thor: The Dark World. He is the utterly cruel leader of the Dark Elves a race of beings said to be older than the universe itself. Born into darkness, Malekith led his people in a war against the Asgardians, using an ancient weapon known as the Aether, but they were thought to have been destroyed thousands of years ago during a battle against the Asgardian King Bor.

However, Malekith survived and after going into hiding for thousands of years, he returned during the second Convergence and sought to retake the Aether and use its power to transform the universe by plunging it back into eternal darkness.
 * He is the evil uncle of Legolas and the Brother of Thranduil