"Granblue" (グランブルー Guranburū) is a clan from the nation of Magallanica. The clan is themed around seafaring pirate crews consisting of macabre, undead characters such as vampires, ghosts, skeletons and gillman.
Following it's theme of "undead pirates", Granblue draws strength from the Drop Zone. They specialize in superior calling units from the Drop Zone which allows them to arrange their field and bring back dead Interceptors, and some of their cards gain [Power] by having a certain amount of cards into the Drop Zone. In order to fill the Drop Zone with more cards to bring back, Granblue also uses effects that send cards directly from the deck to the Drop Zone.