Corpus stands among the six generals of the Oración Seis, governing the continent of Rahatluk under Magus Diluculum's command before Diluculum's presumed demise. He possesses immense physical strength and an intense passion for combat, frequently dismissing opponents he considers unworthy with the words, "Too weak." His attire reflects his nature as a brawler.

Following Diluculum's death and Glaza's rise to power, Corpus aligns with the new tyrannical regime. During the conflict, he captures Chica after she trespasses into Rahatluk, employing brutal methods such as physical intimidation and threats against her friends to shatter her pacifistic resolve. This harsh treatment is later revealed as Corpus's Secret Test of Character. His true objective was to test Avrion's determination and awaken a necessary fighting instinct within Chica, driven by his conviction that strength is vital for survival in their war-torn world. Corpus expresses no actual loyalty to Glaza. In his final moments before death at Ten's hands, he entrusts the protection of Rahatluk to Avrion's forces.

Created as an Advanced Replicant by Diluculum, Corpus was born with abilities far surpassing ordinary denizens. Like other Oración Seis members, he was sent into the world as an infant to survive alone before undergoing Farmagia training under Dentro and receiving higher education from Diluculum and veteran generals. After his initial death, Diluculum resurrected him alongside the other generals, only to transform them into mindless demi-beasts—a state that led to Corpus's permanent demise during their subsequent rampage.