Number Five of the Ten Great Nobles, Karin nominates him for the position on a whim. His absorption of the 叡智の実 grants him the universal wisdom of the demon realm. The seed of wisdom also serves as his artefact affirming his noble status. His acquired intelligence leads Gangaid to despair of the current political state and motivates him to participate in the Succession War in order to create a new world order. He serves as the final boss in Eleanora's route when her misguided attempt to use the mana cannon to resolve the battle in favour of her beloved Fabio backfires spectacularly. The resulting explosion destroys the seed of wisdom, devolving Gangaid to a primitive mental state which is driven by revenge and an insatiable hunger. The explosion scatters Gangaid's essence to the various corners of the demon realm, where his incredible regenerative powers allow the various fragments to reform into new forms which consume and absorb the powers of his victims. Eventually Gangaid succeeds in consuming Farinasea and Volja along with the powers, inadvertently accelerating the conclusion of the Succession War as Fabio and Eleanora eventually find an effective method of countering the slime's regeneration.