Legion

A heavily-armored foot soldier who takes on the appearance of a monster. Long ago, these soldiers were members of a powerful armored battalion who took to the front lines of battle. Soon they were defeated, and with nowhere to return, they commit suicide as their only means of escape. Holding a strong will to avenge their loss, they came back to the world along with the armor they wore. Their enemies are now long gone with the passing of time, but even now they seek battles in search of a way to lift the eternal grudge they hold towards their past enemies.