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Vassago (also known as Vasago, Usagoo) is a mighty Prince of Hell, who rules over twenty-six legions of demons. Vassago is depicted as an angel.


  • Vassago can be persuaded to tell the magician of events past and future, can discover hidden and lost things, and has a "good" nature.
  • Vassago is mentioned in High School DxD as an active devil clan from 72 Pillars.