Achihiko Omega, president of the Omega Corporation, operates the Primagi entertainment system within the human realm. His appearance features combed-back black hair with a distinct teal green streak and gray accents, a beard, and a gold monocle over his right eye. Publicly projecting the image of a benevolent, passionate CEO dedicated to Primagi's success, this facade masks his true obsession with power. He believes intense rivalry among Primagistas—where winners receive glory and losers face humiliation—creates genuine entertainment. Privately, he exhibits cruel tendencies, particularly in interactions with his children, Auru and Inoru, displaying no fatherly warmth. His manipulation extends to Jennifer Sumire Sol, whom he recruits by exploiting her desire to reunite with her magician partner, Ryume, positioning her as a tool for his ambitions. Achihiko's history involves a past friendship and rivalry with Michihito Kaguya (later Hibino). Their collaboration at Omega Corporation dissolved when Michihito left with confidential research on human-to-magician transformation, leading Achihiko to label him a traitor. This betrayal fueled Achihiko's determination to prove his own vision for Primagi, driving a wedge between them. Progressing his goals, he pressures Inoru and Auru to expedite a new Primagi system, aiming to eliminate magical elements in favor of technology-driven entertainment. His plans culminate in leveraging Jennifer's participation in the Grand Festival to further corporate dominance, though his manipulative tactics are ultimately challenged by those uncovering his true nature. His name, Achihiko (阿智彦), translates to "flattery," "wisdom," and "lad," while Omega (御芽河) combines "honorable," "bud/sprout," and "river," also referencing the final Greek letter (Ω).