"A bluish-tinged diamond that Napoleon Bonaparte had mounted to the pommel of his sword. It was named after the French Regent Philippe II, Duke of Orleans, who had purchased it in 1717."
—Persona 5 background
Regent is the first Persona of the Emperor Arcana and the first Treasure Demon the protagonist encounters. It is a forced encounter in Madarame's Palace. In that encounter, Morgana was mysteriously drawn to the golden vase that contained it and caused everyone sans the protagonist to be trapped in security lasers. The trapped teammates then must all be freed before revealing and fighting it. It will only stay in battle for 2 turns before it runs away, and resists or nulls everything except Psy and Nuke. The first available Personas that can hit its weakness are Kodama, who obtains Psi at level 12, and Makami, who starts with Frei at level 15; if these are not available, the skill Lucky Punch, usable by Obariyon at level 9 and Zorro at level 13, should be used to knock it down and initiate a Hold Up; the Rebellion skill, from Apsaras or Succubus, can also be used to increase the chances of a critical hit. It will join immediately without negotiation. While it cannot be equipped and used like a normal Persona, it will be registered in the compendium, granting the protagonist easy access to its wide range of multi-target attack skills through fusion. When itemized using Electric Chair execution in the Velvet Room, Regent yields the Regent accessory, which increases Strength by 3 and grants the Critical Rate up (med) effect to the wearer.
Fusing Treasure Demons works similar to Element fusion in the Shin Megami Tensei series, allowing a persona to "rank up" or down within its own Arcana, making it easy for the protagonist to obtain any missing personas in their compendium. However, these results will not necessarily be as good as normal fusion.
Fusing Regent has the following effects on the various Arcana:
"A bluish-tinged diamond that Napoleon Bonaparte had mounted to the pommel of his sword. It was named after the French Regent Philippe II, Duke of Orleans, who had purchased it in 1717."
—Persona 5 background
Regent is once more the first Persona of the Emperor Arcana and the first Treasure Demon the protagonist encounters, and remains a forced encounter in Madarame's Palace. Compared to the last game, Regent is significantly easier to handle, as it no longer resists anything not its weaknesses sans Phys and Gun, but on the other hand Regent loses its Psychokinetic weakness, leaving Nuke skills its sole weakness. Shiisaa, which can be found in Madarame's Palace, has access to Nuclear skills.
When itemized using Electric Chair execution in the Velvet Room, Regent once more yields the Regent accessory, though while it still increases Strength by 3, the Regent accessory now grants the wearer an automatic Tarukaja to use to start the battle. Additionally, if itemized while the Fusion alarm is sounding, it would yield the Regent R accessory, a slightly stronger version that, while retaining the Attack Master skill, increases Strength by 5.
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