Primitive Idol is a boss found on the 20th floor of Antenora. It is fought alongside the Shouting Tiara and the Wrathful Book. During battle, the Primitive Idol will alternate between Mind Charge and using random magic skills. The largest threat is arguably from the Wrathful Book, which will spend its entire time trying to Enrage the party, potentially leading them to be KOed. After the Wrathful Book is dealt with, the party may engage either the Primitive Idol or Shouting Tiara as they see fit. After being defeated, the Primitive Idol will drop the Throne of Ruin barter item.
Primitive Idol appears on Paths 2 and 3 of Yomotsu Hirasaka within the Midnight Channel. It has access to all three types of Megido spell. After being defeated, it may drop a Force Rock. Selling 4 Force Rocks will unlock the Platinum Claw weapon for Teddie.
In Golden, Primitive Idol's only offensive skill is Heaven's Blade. However, it also has access to Power Charge.