The new foot-soldier after Trilobite Magia and Dodo Magia Chick, the Battle Raider. These Raiders use a mass-produced Progrisekey, Invading Horseshoe Crab Progrisekey.

The user might be general populace, soldiers, and mercenaries. I believe this is Gai's intention, in order to wipe clean all "malicious HumaGear", humans must armed themselves with weapon and that weapon is to become Battle Raider.

The motif of Battle Raider is very similar to Guardian.