Malekith is a fictional character from the Marvel Comics universe, primarily known as a powerful antagonist in the Thor series. He is the leader of the Dark Elves and is often depicted as a formidable foe for the Asgardian hero, Thor. Malekith possesses dark magic and seeks to conquer realms, driven by a desire for power and revenge. In the comics, Malekith's most notable storyline involves the Cursed Realm and his quest to obtain the Aether, a powerful artifact. He has appeared in various adaptations, including the film Thor: The Dark World, where he is portrayed by actor Christopher Eccleston. Malekith's character embodies themes of ambition and the struggle for dominance.