The Five Dhyani Buddhas are Vairochana, Akshobhya, Ratnasambhava, Amitabha and Amoghasiddhi. Tibetan Buddhists believe that the Adi-Buddha, the primordial and highest being, created the Dhyani Buddhas by his meditative powers.
The Five Dhyani Buddhas are celestial Buddhas visualized during meditation. The word Dhyani is derived from the Sanskrit dhyana, meaning “meditation.” The Dhyani Buddhas are also called Jinas (“Victors,” or “Conquerors”) and are considered to be great healers of the mind and soul. They are not historical figures like Gautama Buddha, but transcendent beings who symbolize universal divine principles or forces. They represent various aspects of the enlightened consciousness and are guides to spiritual transformation. Meditative powers are also secret-ray powers, and the Dhyani Buddhas hold the keys to the mastery of the five secret rays.
Each Dhyani Buddha is associated with certain attributes and symbols. Each one embodies one of the five wisdoms, which antidote the five deadly poisons that are of ultimate danger to man’s spiritual progress and keep him tied to worldly existence. Buddhists teach that the Dhyani Buddhas are able to transmute the five poisons into their transcendent wisdoms. The Tibetan Book of the Dead recommends that the devotee meditate on the Dhyani Buddhas so that their wisdoms will replace the negative forces he has allowed to take hold within.
Each Buddha rules over one of the directions of space and one of the cosmic realms of ether, water, earth, fire and air. The Dhyani Buddhas also personify the five skandhas, components that make up cosmic existence as well as human personality. These components are consciousness, form, feeling, perception and volition.
Mark L., Prophet; Elizabeth Clare, Prophet. The Masters and Their Retreats (pp. 98-99). Summit University Press. Kindle Edition.