What book are the old ones, that exist on different planes of existence simultaneously apart of?
Old Ones (Palladium Books): The Old Ones (sometimes referred to in Palladium Books publications as the Great Old Ones or the Unnameable Beings) are a fictional race of Alien Intelligences within the megaversal setting of Palladium Books' game module PFRPG. Alien Intelligence (Palladium Books): In the various game settings of Palladium Books, Alien Intelligences are fictional, vastly powerful beings of unknown origin that are stated to be a combination of equal parts spirit, magical energy, and physical flesh. Alien Intelligence (Palladium Books):  In fact, some of the most powerful Gods of the Palladium Megaverse were themselves spawned by the Alien Intelligences.
i don't know