The einherjar (Old Norse “single (or once) fighters”) are those that have died in battle and are brought to Valhalla by valkyries. In Valhalla, the einherjar eat their fill of the nightly-resurrecting beast Sæhrímnir, and are brought their fill of mead (from the udder of the goat Heiðrún) by valkyries. The einherjar prepare daily for the events of Ragnarök, when they will advance for an immense battle at the field of Vígríðr; the battle which the “ein” (here meaning single-time) refers to. Heimdall occasionally returned the best of Einherjar to Midgard or Jotunheim with the purpose of killing giants, but they were forbidden to talk with the living.
In an effort to ensure that Asgard is never again without guardians to protect it, Magnus has recreated a ritual that imbues those who undertake…and survive…it with a stature that is greater than that of normal mortals. Stronger, faster, more resilient, and able to heal at a much greater speed, these beings are tied to the Pattern of Asgard in a way similar to Pattern Ghosts.
Only those who have served the realm with incredible dedication are offered the chance to endure the Hanging, and of those, many do not survive. Those who do, however, take their place amongst the elite of Asgardian society, acknowledged for their service and the terrible oaths they have sworn.
Members, or Peers, of the Hanged are given a torc-like collar of Asgardian steel as a sign of their office.