Loki is a god of Norse mythology. He is the child of two giant, one of the Aesir.
Odin is the chief god in Norse mythology.
Thor is a hammer-wielding god associated with thunder, lightning, storms, oak trees, strength, the protection of mankind, and also hallowing, healing and fertility.
Valkyrie is one of a host of female figures who choose those who may die in battle and those who may live.