Fictional group history

The Valkyrior are warrior goddesses of Asgard who ride winged horses. Originally, under the leadership of Brunnhilde, they took mortally wounded human heroes from German and Scandinavian battlegrounds and brought them to Valhalla, an area of the Asgardian dimension where the astral forms of the dead Asgardians and human heroes eternally feast and compete in friendly battles. The Valkyries were no longer able to perform this task when Odin, ruler of Asgard, vowed to the Celestials

Celestial (comics)

The Celestials are a group of fictional characters that appear in comic books published by Marvel Comics. The characters first appear in Eternals #1 and were created by writer-artist Jack Kirby....

  a millennium ago that he would severely restrict Asgardian contact with Earth.

In later years, Brunnhilde became a member of Earth's Defenders

Defenders (comics)

The Defenders is the name of a number of Marvel Comics superhero groups which are usually presented as a "non-team" of individualistic "outsiders," each known for following their own agendas...

. The remaining Valkyries were killed in a war between Odin and Hela over rule of Valhalla. Odin restored the Valkyries to life after he regained possession of Valhalla, but these Valkyries only have physical form within Valhalla; outside it, they exist only in astral form. Valtrauta has taken Brunnhilde's place as ruler of the Valkyrior, and Hildegarde

Hildegarde (Marvel Comics)

Hildegarde is a fictional character in the Marvel Universe.-Fictional character biography:Hildegarde is one of the Valkyries. Thor sent Sif and Hildegarde to Blackworld. There, they came upon a town where people were fleeing in blind terror from Ego-Prime, which was created accidentally from Ego...

's sister Krista (aka Mist) has filled the role of the ninth Valkyrie, left open since Brunnhilde's departure.