What are the warriors in Valhalla called?

The story behind the answer

Einherjar are the fallen warriors chosen by the Valkyries to dwell in Valhalla, Odin’s great hall. There they train daily, die and are revived, and feast each night—preparing to fight alongside the gods at Ragnarök. By contrast, Valkyrior (Valkyries) are the choosers of the slain, the Aesir are the main tribe of gods, and “Norse Champions” is just a generic phrase.

To remember it, think “ein-” (one) + “-herjar” (war-host): Odin’s elite “one host” of heroes. Picture the cycle—battle by day, roast boar Sæhrímnir and mead from the goat Heiðrún by night—so the name Einherjar becomes tied to Valhalla’s eternal warrior training camp.