Frigga was the Queen of Asgard and wife of Odin, mother of Thor, and adoptive mother of Loki. She attempted to keep the peace between the family even when Loki discovered he was the true son of Laufey and became vengeful towards her and her husband.
When Thor brought Jane Foster to Asgard to protect her from the powers of the Aether, Frigga took care of her and defended her against the attacking Dark Elves, even sacrificing her life at the hands of Malekith to ensure her safety. Frigga's death allowed Loki, whom she had always cared for, to reconsider his life choices and join with his brother to avenge her death, although her death was not enough to change Loki's desire to rule.
