Baldr was the god of light in Norse mythology. He was also associated with beauty, joy, purity and innocence. The son of Odin and Frigg, he was husband to Nanna, and father of Forseti, the god of justice. Baldr was not a powerful god, but he was well liked and was portrayed as friendly and kind.http://www.pantheon.org/areas/mythology/europe/norse/articles.html

Baldr lived in a hall called Breidablik in Asgard, the realm of the gods. In Bredablik, nothing evil could survive and nothing could hurt Baldr.http://users.dickinson.edu/~eddyb/mythology/Gods-7.html Both the Aesir, the principal Norse gods that lived in Asgaard, and the Vanir, the fertility and wilderness gods and goddesses who lived in Vanaheim, were worried when Baldr would have a bad dream that they could not understand.http://users.dickinson.edu/~eddyb/mythology/Gods-7.html

Baldr was loved by both humans and gods, except for the trickster god Loki. He was jealous of Baldr, and wanted to get rid of him. Baldr's mother Frigg had a premonition that her son would die young, and so she went to every thing on earth, including animals, plants, minerals and elements, and made them swear that they would not kill Baldr. Every thing she spoke to took the oath. Since he was invincible, the other gods had fun throwing things at him and using him for archery target practice. Loki wanted to know if there was anything that had not taken the oath to remain harmless to Baldr, so he tricked Frigg into telling him that one plant, the mistletoe, had not taken the oath. Frigg had thought it too small and harmless to hurt Baldr, so she hadn't bothered making it take the oath. Loki immediately went and got some of the mistletoe and made it into a dart. He gave it to Baldr's blind brother to throw at Baldr, which he did, killing him.http://www.pantheon.org/areas/mythology/europe/norse/articles.html