Ampilus

Skyward Sword

The Electric Rollobite 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, likely meaning it will do high amounts of damage upon colliding with Link, and it also strongly suggests it is mechanical.