Armor Armarge "Armored Armadillo"

About

Armored Armadillo, known in Japan as Armor Armarge, is a sturdy armadillo-type Reploid in Mega Man X. He is a former Maverick Hunter who joined Sigma's uprising. Armored Armadillo is a warrior ideally suited to fighting underground. Though he is a stoic soldier who never disobeys an order, he is loyal to a fault, continuing to obey Sigma's orders despite the fact that he became a Maverick and rebelled against humankind.

(Source: Mega Man Knowledge Base Wiki)