In Zoroastrian mythology, the "good" state of mind that accomplishes duty. He is one of the six Amesha Spentas of Zoroastrianism. He represents all animals from creation, especially cattle. Vohu Manah is of neutral gender in Avestan grammar but in Zoroastrian tradition is considered masculine. The second day of every month and the eleventh month are dedicated to him. His eternal opponent is the demon of evil thought, Aka Manah.
"The second of Zoroastrianism's "divine sparks," Amesha Spenta, its name means "good thought." This holy entity is said to have given Zoroaster revelations from God."
—Persona 5 Royal Background
Vohu Manah is the ultimate persona of the Councillor Arcana, and can only be obtained through fusion after completing Takuto Maruki's Confidant.
Itemizing Vohu Manah in the Electric Chair, which is only possible during the Third Semester, creates the Doomsday ray gun for Goro Akechi, with a ATK of 330, ACC% of 85, a magazine size of 5 and a passive effect that boosts all of Akechi's stats by 5. However, when a Fusion alarm is sounding, Itemizing Vohu Manah creates a stronger version of Doomsday, called Ancient Day, with an increased ATK of 350 and increasing Akechi's stats by 6, making Ancient Day Akechi's ultimate Gun.