Thor: The Dark World release date November 8, 2013

In the comicbooks, Algrim the Strong (Adewale Akinnuoye-Agbaje) was the most powerful of a race of Dark Elves, who is coerced by Malekith the Accursed (Christopher Eccleston) to fight Thor (Chris Hemsworth). After he's betrayed by Malekith and injured during a battle, Algrim is healed and transformed into a much more powerful being called Kurse, who is twice as a strong as Thor. 

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http://www.movieinsider.com/m9248/thor-2/