Loki Laufeyson, The God Of Mischief

Loki Laufeyson is Thor Odinson's adoptive frost giant brother and Odin's adoptive son. He appears in Thor and The Avengers. He is one of the main villains in the movie along with The Other and Thanos which whom he trades the Tesseract with in exchangefor a Chitauri and Leviathan army that he uses to attempt to take over the world. He fails and Thor teleports Loki and himself to Asgard to get Loki punnished by Odin. He is portrayed by Tom Hiddleston.