Dark Fortress

The Dark Fortress (Japanese: ダークフォートレス, Dāku Fōtoresu) was a place located on Quarton. It first appeared in "Two Worlds". It was Vilius's original fortress, until it was destroyed by the Dark Tenkai Dragon. After that, when he was resurrected by the Guardians, he overpowered them and took control of the Guardians Sanctuary.