Yaggdytha

Yaggdytha (ヤグディータ, Yagudīta) was an organization that was under the Great Old One, Cthulhu, which had the main purpose to invade other worlds using the Evil Dragons.

Summary
Yaggdytha was an organization within the Nazarick House, which had the main purpose to invade other worlds using the Evil Dragons. For that goal, they seeked to defeat the Great Red which protects the Dimensional Gap, the Antichrist which guards the domain of the Garden of Eden and the other Dragon Gods by creating a legendary beast mentioned within the pages of the Necronomicon and Key of Solomon, a race of world destroyers named the Apocalyptic Beasts.