The International Wizard of Oz Club

The International Wizard of Oz Club (の・国際・オズの魔法使い・クラブ, Ozu Kurabu no Kokusai Uizādo), is a supporting agency of the Three Factions, and the ones who supplied Gray and Akainu with their first Artificial Longinus.

History
Originally an agency that assisted Grigori and the Fallen Angels and later the Three Factions, The International Wizard of Oz Club was built and founded by the Scarecrow, the young man, Justin G. Schiller, and fifteen others.

Summary
The International Wizard of Oz Club first introduced in Chapter 607, when one of the two current leaders of the agency, the Cowardly Lion, and one of the founders of it, the Scarecrow, arrived at Mythos on the call of Mephisto Lucifer and gifted the three Longinus, Mjölnir False, Grand Chariot and Liberalitas Aura to Kami Shikai, Gray Hyoudou and Moe Hammond.