Definitions for "Einherjar"
The word used to described mortals slain in battle. In Valkyrie Profile, it is used pretty loosely. These mortals are sent to Valhalla and split between Lord Odin and Freya. Basically, this is the default term for "character". See Mythology for more info.
In Norse religion the einherjar or einheriar were spirits of warriors who had died bravely in battle. The name is Old Norse for "one-army-ers" (singular would be einheri). It is often interpreted as "outstanding fighter", but might also signify "those who are all [now] in one army", because when alive on earth they were in many armies and bands, but now they are all in the Army of the Dead.