Fly in the Heavens

The Fly in the Heavens (フライ・ザ・ヘヴン) is a Mobile Fortress owned by England.

Magic God Othinus Arc
The contingent of Second Princess Carissa was supposed to use it along with Hotel Ariel and Queen Mermaid for the Anti-GREMLIN Alliance attack in the North Sea Sargasso near Iceland. Apparently, the Knight Leader expressed doubts in it being ready for its deployment for the operation in time.

The Knight Leader later received word that their contingent would not be able to use the mobile fortress for the operation, much to Carissa's dismay.