Loki (Marvel)

Loki (voiced by Tom Hiddleston) is the Norse god of mischief and the main antagonist in Thor and The Avengers. He is also the arch-enemy and step-brother of Thor, and is determined to get rid of him. At one point, he even goes so far as to send a giant robot called The Destroyer to Earth to get Thor out of the picture. However, Thor and the Justice Guardians manage to defeat him.