With this in mind, Kusunoki decided upon an armadillo and a flying squirrel. Additionally, since Sonic is a hedgehog, a relatively obscure animal, Kusunoki wanted his companions to be equally unusual. Kusunoki reasoned that in order to control like Sonic, the new characters would need to be animals that could have the same proportions as Sonic. Mighty the Armadillo was designed by Manabu Kusunoki for SegaSonic the Hedgehog.