The Primordial Buddha. The Dharmakaya. The pure nature without stain or blemish.
Samantabhadra, also know as Kuntuzangpo, beyond all thoughts, words or conceptualization, spontaneously and effortlessly fulfills the needs of all sentient beings.
He is the ultimate nature of all good and bad qualities of both samsara and nirvana and the ultimate source of all realization.