•Dharmakayaas a Buddhist concept is conceptually equivalent to the Hindu Atman. It is everywhere and in all things, and it is the underlying power in the universe from which visible Buddhist deities recurrently appear.
•So the Vairocana(or Mahavairocana) image at the center of Shingonworship is the embodiment of Buddhist truth, and pervades all other beings.
•Incidentally, the Dharmakayamovement of Thailand regards this Buddha as the true Buddha, who is present in all sentient beings (hence they all have the potential for enlightenment).