from the planet Arburia. The Pelarotan home planet was destroyed by "The Great One"

Arburian Pelarota are a hulking, broad-shouldered alien covered in natural armor plating. This armor can resist almost any attack, ranging from acids to lasers to extreme heat. By curling up into a ball, much like an armadillo or pillbug, Arburian Pelarota can encase themselves in this armor, becoming virtually invulnerable. They can then spin themselves like a wheel, rolling into enemies at high speeds to attack. The drawback is that Arburian Pelarota quickly pick up inertia, which can make hitting more maneuverable targets difficult, as they can't slow down quickly. In addition, Arburian Pelarota speed and maneuverability is limited outside of thier ball form, owing to their bulk and high center of gravity.