Question: What book are the old ones, that exist on different planes of existence simultaneously apart of?

Related documents: [0]  [DOC] 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. They are said to exist on different planes of existence simultaneously, and in the Palladium hierarchy of powers, most Alien Intelligences, apart from the Vampire Intelligences, are more powerful than the mightiest Gods in Palladium. In fact, some of the most powerful Gods of the Palladium Megaverse were themselves spawned by the Alien Intelligences. [END] 
[1]  [DOC] 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. The Old Ones are the most powerful forces ever to have existed in the various Palladium game settings, and their power dwarfs that of 'ordinary' Alien Intelligences, beings which are in general far more powerful than the gods themselves. [END]  
Answer: Palladium Books
Palladium Books