The film's official villain is Malekith (Christopher Eccleston) who rules the Dark Elves and is trying to re-capture the all -
powerful Aether, a substance of infinite energy.
Not exact matches
To do so they need — much like Eric Bana's vengeful Romulan in 2009's Star Trek — some all -
powerful crimson space goo called the
Aether.
Thor recovered the
Aether and, wishing to keep it away from the Tesseract in their possession, sent the
powerful weapon deep into outer space where it would join the collection of the aptly named Collector.