Fraxinus (フラクシナス). is an airship of the organization known as Ratatoskr. The command center of Ratatoskr is located on the airship, making it a very important base to its members. It usually hovers about 15 km above the Tengu City. It is shown to have several defensive and offensive capabilities. Fraxinus comes from Fraxinus excelsior, the scientific name of European Ash, which was believed to be Yggdrasil, the Norse World Tree.