Aura of despair isn't a spell, v it's a skill. Despair Aura I: Has a chance (if not resisted by ability, equipment, level difference, etc.) of causing Fear. Fear refers to an abnormal status of being afraid, which inflicts a penalty to all actions. Besides inflicting fear, it can reduce the stats of its victims. Normally, Despair Auras would not have an effect on the level 100 NPCs, but when equipped with the Staff of Ainz Ooal Gown, its effect can be strengthened. Although wearing armor protects against weapons like the stilettos, it does nothing against ability penalties caused by Ainz's Despair Aura.
Despair Aura II: Has a chance of causing Panic. Panic is a more severe version of Fear, caused by stacking additional Fear effects on each other. Anyone afflicted by that status will want to flee the ability user at all costs ― in other words, they will be unable to take any combat-related actions against that person.
Despair Aura III: Has a chance of causing Confusion. This can only happen if the target does not have any recovery measures prepare.
Despair Aura IV: Has a chance of causing Insanity. Insanity is an extremely annoying bad status, being a permanent version of Confusion. It cannot be removed without magic from a third party.
Despair Aura V: Has a chance of causing Instant Death.
Demiurge
2021-12-28 00:22:00 +0000 UTC
So, Mare is the guy dressed as a girl, and Aura is the girl dressed like a guy. Aura is ranger/beast tamer and Mare is a druid. Since they're twins, it can be hard to tell. But the animators did some simple tricks to help. Mare's pointy elf ears face downward, Aura's face upward. And their eye colors are mirrored.