Spikey (Super Mario RPG: Legend of the Seven Stars)

Spikeys are common creatures in the game Super Mario RPG. They look a lot like Spinies, but are bipedal and have their heads tucked into their shells. The are first seen in Bandit's Way. They have a green counterpart called Spikester and a purple counterpart called Oerlikon and a unused sub-species named Super Spike. It is possible that they are adult Spinies, but this is never elaborated upon.