Ampilus

Skyward Sword

Ampilus is an unusual desert-dwelling enemy who's only mode of attack seems to be rolling like a Goron. While it looks like a wheel, it appears to be shaped like a spiral or a rolled-up creature, making it strongly resemble the Rollobites from The Minish Cap. Whether it is simply a wheel-shaped enemy or can unroll and move or attack in other ways is unknown. Its body is electrified, and inside of its hard shell is a crab. When Ampilus stops moving, you can walk up to it and slash the head with your sword to kill it. A good way to stop an Ampilus from moving is by bashing it with your shield. When searcing for the electric nodes to unlock the lanayru mining facility, inside the stone cache where the fire node is and the cave where the electric node is the ampilus are turned into babies where their only attack is to shock you if your holding them. They are used to power machines that open the gates to the nodes.