Loki

Loki is the norse god of mischief and half-brother of Thor. He was the villain responsible for bringing the Avengers together for the first time.

Formation of the Avengers
In an plot to seek revenge against his half brother Thor, Loki attempted to lure Thor into a confrontation by using the Hulk to grab his attention. Loki manipulated the Hulk into accidentally derailing a train, however the Hulk was able to prevent tragedy by supporting the damaged railing with his own super strength.

Loki is successful in luring Thor to the Isle of Silence where they do battle. Thor gains the upper hand and brings Loki to Earth to face the heroes he has been manipulating. He attempts to escape by turning himself radioactive, however Ant-Man is able to trap him inside of a lead-lined tank. After Loki's radioactivity wears off, Thor says he will deliver Loki back to Asgard.

Powers

 * Thought Projection - Loki is able to send his disembodied self anywhere he pleases, even while physically restricted to one place.


 * Illusion - Loki is capable of casting visual illusions, tricking his opponents into seeing things that are not really there.
 * Ice - Loki can freeze the molecules in the air.
 * Radioactivity - Loki can make himself radioactive for short periods of time.