Epsilons (イプシロン, Ipushiron) are one of the many enemies in the Hyperdimension Neptunia Series. They're large winged mechas, usually they're bosses or dangerous enemies.
Epsilons are Risky Bosses, as such, they won't actively pursue the player.
Epsilons have 4 skills:
Above 50% HP
Epsilons' main skills are High Slash and Paralyze Attack. In rare cases they can use High Ice Tornado or Beam. When they run out of SP they only use High Slash.
Below 50% HP
When Epsilons' HP go below 50%, the odds of them using High Ice Impulse seem to increase a bit, while the ones of them using Beam increase greatly.
Epsilons don't have direct partners.