Amy Kirio

Amy (Ami) Kirio is the main antagonist of the Batora (Battler) Events arc in the anime and manga series ''Mairimashita! Iruma-Kun (Welcome to Demon School! Iruma-Kun!'').

He is voiced by Ryōta Ōsaka.

Early life
When his magical capacity was evaluated, Amy saw that he was sent to the Demon Children Garden by his worried family upon assuming that he possessed little to no magical abilities. It was there that Amy was the receiver of the institution's harsh environment and was relentlessly bullied for "dirtying" his family's line.

It was there that he met a girl who was similar to him in terms of magical capacity. She allowed him to touch her charm, an earring that was passed down to her by her grandmother. That was until Amy's bullies grabbed it and despite his efforts of saving it by using his barrier ability, the earring nevertheless shattered, bringing despair to the girl. After the girl quit the facility, Amy realized that he loved to see the despair radiating from others, deciding to further indulge in harming his victims.

Present
He appears to Iruma as the founder of the Battler club Magical Tools Research Division President when Iruma's ring connecting with his choker due to being made of the same material. From there, Iruma decides to join Amy's Battler due to their many similarities, and Azz and Clara Valac also join. He also shares his dream with Iruma of aspiring to make a magical tool to eradicate the gaps in the power ranking of demons. He plans to do this through a magical device called the Gabu-ko. Iruma assists him with it by reassembling a heart-shaped device for the machine.

In actuality, Amy is secretly working with a member of the Thirteen Crowns of the netherworlds Baal (whom he terms as his "bro" in front of Iruma and his friends) and their plan is to destroy Babyls during the Battlers Events. At the central plaza where the Bell of Ceremonies is situated, Amy intends on trapping a massive chunk of the students and their families inside of the building with his barrier ability which would result in major casualties.

It is also revealed that Amy was faking his weakness; while he was legitimately a weaker level demon, he exaggerated is super-fragility profoundly to take suspicions off himself. Unlike other demons, Amy is also extremely perverted when it came to pain and suffering with him taking immense gratification from the suffering he inflicted on his victims and also his own suffering as well.

His plan would end up failing because of Iruma's interventions.