Spiridus

The Spiridus is a bi-wing airborne fortress, featured in Ace Combat X2: Joint Assault, making it's first appearance over the skies of Tokyo. Due to it's bi-wing design, it is similar in shape to the X-49 Night Raven. Latest footage shows that the Spiridus is, by far, the most technologically advanced airborne fortress in the history of Ace Combat, because it is armed with plasma/meson armaments, such as plasma spheres (identical in function to the High-Powered Microwave of Skies of Deception), a plasma cannon in the nose, and a laser system, alongside a special system that allows the aircraft to unleash a powerful beam of energy, like a lightning strike.

This fortress is the main weapon of the insurgent group Valahia, and has a sister ship, the lightly-armed Orgoi. It was shot down over London, but the Valahia rebuilt it near Lake Tahoe, Nevada. It was also shot down.