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Ajuka Beruzebubu

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Ajuka is a rare person among Devils who “creates”, preferring to create new things and claiming that it is one of his hobbies. Ajuka, however, doesn’t care much about his role as a Satan, focusing more on his hobby as a scientist and inventor over his job, and also has an easygoing nature like his fellow Satans. Despite this, Ajuka isn't irresponsible and will fulfill his role as a Satan when required, proven when he kills the Devils of the?Old Satan Faction?who threaten the peace of the current Devil society and create a method to defeat the Jabberwocky and Bandersnatch to protect the Underworld, he also tried to resolve political issues that Sirzechs couldn't handle.
He also possesses a dry sense of humor towards his enemies, particularly from the Old Satan Faction, as he called "praises" all discrimination and criticizes what the Devils from the Old Satan Faction throw at him, and tends to mock his enemies if he deems them worthless.
Ajuka values his friendship with?Sirzechs,?Serafall, and?Falbium. According to him, the only reason he became a Satan was because Sirzechs became one himself,[1]?as well as declaring that whoever became Sirzechs' enemies would become his, declaring this to?Shiva. After the three sealed themselves in the Isolation Barrier with?Trihexa, Ajuka resolved to shoulder their respective duties and watch over the Devils in their place on account of their friendship.
He is a very kind and caring person, as he helps Issei and the Gremory team with their various problems, he also thanks and apologizes to Issei regarding the trouble Diodora has caused them. While Ajuka normally takes a lenient stance on politics, he is willing to interfere to prevent innocent people from being sacrificed in political schemes such as when he protected Riser and Ravel from the Great King Faction regarding the King Piece. Despite opposing the Old Satan Faction, Ajuka is lenient enough to show mercy to Tsufaame Tereaku Leviathan although he killed her when she r