G-12, formally known as Marine Grand Line 12th Branch (海軍G・L125支部 , Kaigun Gurando Rain Dai-Jū Ni Shibu?), is a arine Base which was formerly located within the Grand Line, however it was moved after the base was destroyed by the Thunder Beast Pirates. The base is now located in the New World. It was first mentioned by Orion during his fight with Hiro Xanthe.