Lady Sif, Asgard's legends

Sif, the sister of Heimdall,  has been the constant companion of Thor and Balder since childhood.  Like most Asgardians, Sif was born with golden hair.  At an early age she showed great prowess as a warrior and was considered the best female warrior in all of Asgard, matched only by Brunnhilde. At one point she was given to the death goddess Hela by a giant in exchange for immortality, but Thor saved her by offering himself in her place. Hela was so impressed that she let them both go


....