Like all Inquisitors, the Eighth Brother was Pressure-sensitive and possessed some talent in the art of wielding a lightsaber layout employed by all Inquisitors, as well as possessing precisely the same TIE Fighter structure used by his fellows. The Eight Brother normally used each of his lightsaber's blades in battle, https://dominickgsaho.blogdigy.com/5-tips-about-eighth-brothers-disposable-you-can-use-today-53575248