Self-Defense Systems (自動防衛システム, Jidō Bōei Shisutemu, lit. Automatic Defense System) are one of the many enemies in the Hyperdimension Neptunia Series. They're orange 4-legged machines equipped with two laser cannons.



Self-Defense Systems have 5 skills:

  • Attack (0 SP)
  • Explosion (120 SP)
  • High Explosion (160 SP)
  • EX Impulse (160 SP)
  • X. Gust (240 SP)

Attack Patterns

Above 50% HP

Self-Defense Systems' main skills are Attack and Explosion. In rare cases they use High Explosion, EX Impulse or X. Gust instead. When they run out of SP they only use Attack.

Below 50% HP

When Self-Defense Systems' HP go below 50%, the odds of them using High Explosion or EX Impulse increase, and the ones of them using X. Gust increase slightly.


Self-Defense Systems can have some partners to help them, only one combination is known:

A Self-Defense Prototype, a Skill Jammer Pod and an Item Jammer Pod (Surpression Prototype.pngBit Custom.pngBit Custom.png)
  • 12,580 EXP / 16,354 EXP (EXP Up)
  • 8370 Credits / 10,881 Credits (Credits Up)

Related Enemies

Same Skin & Model

Same Model



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