Rigdoria

Rigdoria (リガドリア, Rigadoria), officially known as G-7 (海軍G・L第7支部, Kaigun Gurando Rain Dai-Nana Shibu), is one of the various G-Bases under Marine control. Originally an uninhabited island filled with dangerous fauna and flora alike, it later came under Marine control when Mahesvara joined the organization shortly after his exile. It originally belonged to the Kano Country — used as one of the country's various training grounds for up-and-coming Martial Artists and Swordsmen, but was abandoned out of respect for the former Naval Fleet Admiral.

It's one of the two places that's used as a training ground for new Marines to harness their latent talents to survive in the, alongside Takamagahara — the current. Though it's under Mahesvara's and the Marine's control, one could say the true owner is Regimel D. Elucifel — being the drillmaster and having conquered the island's wildlife after years of isolation and harsh training on the lands, bending to his whims.