Unidentified Artificial Mechanism 6 is an unknown model of machines that are encountered by Samus when she uses the Ziplines in SkyTown. They resemble small machines attached to large wheels, and are somehow attached to the Ziplines without any noticeable attachments. They usually move in groups of 2 or 3 or rarely 4, and appear to gather energy before colliding with Samus in an attempt to make her fall off the Zipline. They must be shot so Samus can keep on the rail. Hitting them in the red circle does additional damage.