With its origins in Project SHADOW FURY, the Kagemusha-Class Prowler was a Prowler class designed in 2536, developed to supplement and gradually phase out the older class. Originally, it was intended as a series of fast and lightly armed corvettes for colonial defence, but when the Covenant began its campaign among the Inner Colonies the UNSC reappropriated the class for conversion into Prowlers, and as a testbed for metamaterials being developed.