is a member of House Kira who is chairman of the Clover Kingdom's Magic Parliament, a manipulative and ruthless man who places justice above even his own family. He is also a user of Scale Magic, making him able to shrink and counter all forms of magic save Anti-Magic. Following the elf incident, after dispatching anti-monarchist nobles who attempted to kill Augustus in the confusion, Damnatio oversees Asta's trial for using forbidden magic before the Black Bulls intervene with Julius passing a decree for a Black Bull mission outside the Clover Kingdom to hinder Damantio's inquisition. Damnatio allows this, but vows to place every Magic Knight through an inquisition should Asta's mission fails and threatens the Clover Kingdom in any way. He is later asked by Julius to help defend the Clover Kingdom from an ancient demon. They both struggle against it until they are saved by Asta. During the Black Bulls’ battle against the Dark Triad, Damnatio conducted his own investigation on the Devils and realized an inconsistency that links Julius to the unaccounted devil Astaroth. Damnatio confronts Julius about this, only for Lucius Zogratis to manifest in Julius and incapacitates him before he could use his Scale Magic.
