Tranquil Idol appears in Halls 7 and 8 of the Steamy Bathhouse within the Midnight Channel. In battle, it will use Marakunda on the party and then proceed to use its Ice spells to attack. While not being set as being strong to elemental spells, it will take slightly less damage from them and its weakness is set to only be twice as likely to be hit with Darkness instead of the usual weakness rate (200% instead of 1275%). When defeated, it may drop Decorative Stone. Selling 10 Decorative Stones at Daidara will unlock the Disguise Mask accessory.
In Golden, Tranquil Idol appears in Halls 3 and 4 as Red Shadows, and 6 through 8 as regular Shadows. It loses Marakunda, using Marakukaja in its place. Selling 5 Decorative Stones at Daidara is enough to unlock the Disguise Mask. Tranquil Idols may also drop Fluorite for trade at Shiroku Pub. If request #26: Acquire a Crooked Cross is accepted, Tranquil Idols will drop Crooked Crosses until the request is completed.
Persona Q: Shadow of the Labyrinth[]
Tranquil Idol appears in Stops 1 through 3 of the Group Date Cafe. It attacks with multi-target Fire and Wind skills, and may increase its or an ally's attack with Tarukaja. When defeated, it may drop Idol Piece and Idol Veil. Idol Piece is used to create the Night Stalker for Shinjiro, and the Phalanx B2 for Aigis. Idol Veil is used to create the Aigis Armor v3 for Aigis, and Twin Armor for Zen and Rei.
