Hraesvelgrs (フレースヴェルグ, Furēsuvuerugu) are one of the many enemies in the Hyperdimension Neptunia Series. They're mechanical phoenixes with what looks like huge eyes in their wings.
Hraesvelgrs have 3 skills:
Above 50% HP
Hraesvelgrs' main skill is Thunder, but they use Attack instead pretty often. Occasionally they use Thunder Attack. When they run out of SP they only use either Attack or Thunder Attack.
Below 50% HP
When Hraesvelgrs' HP go below 50%, the odds of them using Thunder seem to increase.
Hraesvelgrs don't have direct partners.