Einherjar

Einherjar (エインヘリャル Einheryaru) are, in Saint Seiya: Soul of Gold, deceased warriors brought back to life by the will of Odin.

Mythological roots
In Norse Mythology, einherjar are those that have died in battle and are brought to Valhalla by the valkyries. In Valhalla, they 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" (single-time) refers to. Heimdall occasionally returned the best of Einherjar to Midgard (Earth) or Jotunheim with the purpose of killing giants, but they were forbidden to talk to the living.

Appearances in Saint Seiya

 * Saint Seiya: Soul of Gold (debut)