Hard Armor Bug is a special insect found both within YGGDRASIL and the New World.
A pillbug insect that is large enough to cover the entire arm. In the Anime, its green carapace is line two sets of spikes, with intricate gold lines that form an eye.
The Hard Armor Bug is a mostly defensive summon. It acts as a living shield for the User, capable of withstanding attacks from earth-shattering magic items.