Mikhail is a male demon who appears as a minor antagonist in Arifureta: From Commonplace to World's Strongest. He serves under Freid Bagwa, one of the primary commanders of the demon army, and is introduced as the fiancé and lover of a female demon named Cattleya. In terms of physical appearance, Mikhail is described as a handsome man with long blond hair and green eyes. Like all members of the demon race, he has swarthy red skin and pointed ears, which are defining traits of his people.

Mikhail's personality is largely shaped by the cultural beliefs of his race. Like most demons, he is a fervent believer in demon supremacy and holds strong faith in their god, Alva. This ideological foundation makes him view demons as inherently superior to humans and beast-people, and it drives his participation in the ongoing war between the demon realm and the human kingdoms. However, the most defining aspect of Mikhail's character is his deep-seated anger and thirst for vengeance. After Cattleya is killed by the protagonist Hajime Nagumo, Mikhail becomes consumed by a burning desire for revenge. His personal loss transforms him from a loyal soldier into a figure driven almost entirely by grief and a need to avenge his beloved.

Mikhail's primary motivation throughout his appearance in the story is to avenge Cattleya's death. This personal vendetta against Hajime Nagumo overshadows his broader loyalty to the demon cause, making his actions intensely personal rather than purely ideological. His role in the narrative is that of a minor antagonist who confronts Hajime's party. He directly challenges Hajime in an attempt to settle the score, but his quest for revenge ultimately fails. He is killed by Shea Haulia, one of Hajime's companions and a rabbit-eared beast-person, during their confrontation. His death serves as a narrative checkpoint that demonstrates the growing strength of Hajime's group and underscores the consequences of the conflict between the two sides.

In terms of key relationships, the most significant one is with Cattleya, whose death is the catalyst for his entire character arc. His relationship with Freid Bagwa is that of a subordinate and commander, likely built on shared demon supremacist beliefs and military hierarchy. His relationship with Hajime Nagumo is defined purely by antagonism and a desire for revenge. Regarding his development, Mikhail does not undergo a significant character arc; he remains a vengeance-driven figure from his introduction to his death, without any notable change in perspective or redemption. As for abilities, Mikhail is a capable fighter and a soldier of the demon army, although specific named skills or magical abilities are not extensively detailed in the main narrative. His combat prowess is sufficient to make him a threat to ordinary opponents, but he is ultimately outmatched by the far more powerful members of Hajime's group.