Apostate Tower appears in the Harabah Block of Tartarus, from floors 165 to 179. It will generally appear in groups with other Shadows but will also come in groups as large as four, which will make for a larger EXP yield before party members become tired. They will mostly use their Poison skills with occasional Electricity or piercing attacks.
In Golden, it appears in Paradises 1 to 4. It gains a weakness to Dark spells. In battle, it gains the ability to nullify any elemental resistances on the party. It may also drop Meteorite for trade at Shiroku Pub.
Persona Q: Shadow of the Labyrinth[]
Apostate Tower appears in Nights 3 and 4 of the Inaba Pride Exhibit. It is weak to both Light and Dark, attacks with heavy single-target Wind and Ice skills, and can put a party member to sleep with Lullaby Song. When defeated, it may drop Tower Piece, Tower Crown, and Tower Eye. Tower Piece is used to create the Maxima Sniper for Aigis, Demon Boots for Chie, and the Pegasus Strap accessory. Tower Crown is used to create Gaea's Grace for Shinjiro, the Machine Pistol for Naoto, and the Head Guard accessory.