Balder is the god of light. He is one of Thor's closest friends since childhood. It is revealed that he is actually the son of Odin and Frigga thus making him Thor's half-brother. Odin kept Balder's true identity hidden as he feared a prophecy that stated Balder's death would one day trigger Ragnarök, for this spells were cast making him near-indestructible in Asgard. Balder assumes the throne of Asgard when Thor is exiled.