[Source] The double-bladed spinning lightsaber was a specially-designed lightsaber model used by the Inquisitorius, a group of Dark Side Adepts who enforced the will of the Galactic Empire. It was capable of both single and double blades, and was capable of spinning in a circular motion when both blades were emitted. Known wielders of this model included the Grand Inquisitor, the Fifth Brother, the Sixth Brother, the Seventh Sister and the Eighth Brother. As was custom with the Jedi and Sith, the lightsabers used by the Inquisitorius thus far have shown variation in the weapon's design while maintaining core features.