Necronomicon (ネクロノミコン?) is a Persona in the series.
Theis a fictional grimoire (tome of magic). It was first mentioned in the short story written by , but its exact origin is the subject of debate. The book subsequently also appeared in stories of Lovecraft's followers. The Necronomicon has since gained a cult following and various fake "replicas" of the book are circulating.
In the context of Lovecraft's works, the Necronomicon is a tome detailing the truth behind the various ancient cosmic beings that have inhabited Earth and continue to influence humans for their own ends. Written in the 8th century by the "mad Arab" Abdul Alhazred, it both functions as a means of imparting the forbidden knowledge of the ancient ones, and a source of danger as those who read it risk going mad from its knowledge.
Necronomicon is Futaba Sakura's Initial Persona, formed when she regains her will to live and accepts a consenting Shadow Futaba. It is shaped like a UFO with a metallic Gargoyle statue crouching on its top. The UFO's exterior is decorated with lime green glyphs of various origins. Futaba is piloting from the inside. This Persona symbolizes Futaba's unknown power.
- In keeping up with the theme of theft of Persona 5, the design of the UFO is based on the infamous rumor that extraterrestrial visitors abduct living beings on the earth to their ship and conduct inhumane experiments. It is also analogous to Futaba's role as a data analyst and her social alienation.