'Myo-o':

also,

'Daison Myo-o':

a Wrathful King of Mystic Knowledge.
represents the power of the Butsu/Nyorai to vanquish blind craving
Myo-o are masters of the power of mystical spells - jumon /shingon (mantras).
Myo-o protect adherents of the Dharma from all harm and evil influences. They are wrathful (funnu) & terrifying in appearance, yet they embody the indomitable power of compassion which breaks down all obstacles to wisdom and liberation.

"great and venerable kings of magic knowledge"

the four heavenly kings:
each of which isresponsible for one of the four cardinal directions.
Each tenno leads an army of supernatural creatures who help them protect the Dharma, and keep demons at bay

Buddha of Infinite Light & Life, and Lord of the Pure Land of the Western Paradise, Amida is the central deity in the Jodoshu (Pure Land) & Jodo Shinsu ( True Pure Land) Schools.
Amida possesses infinite wisdom and a compassionate heart. He relieves the suffering of the distressed. One of the primary vows of Amida Nyorai is that he will never abandon even those who have committed serious transgressions. All may achieve spiritual peace of mind and salvation by relying on his power
Also known to provide comfortable long life.

chief Buddha of the heavenly realm known as the Land of Extreme Bliss.
Ashuku imbues his devotees immovable, unshakable faith & the aspiration for the realization of buddhahood

The Great Shining Cosmic Buddha - central to Shingon, Dainichi Nyorai is the life force of the buddhas that illuminates all things - the universal truth which dissolves away all troubles and rescues us from uncertainty

Shaka Nyorai / Shakyamuni Butsu

The historical Buddha who lived in India about 2,500 years ago, who is, at the same time considered to be the Original Eternal Buddha (hombutsu) who is unborn and undying and is the source of all other manifestations of buddhahood

'The master of remedies', Yakushi, the nyorai of Healing, brings comfort by curing illness - both mental and physical.
With his right hand Yakushi forms the 'wish-granting' mudra. In his left hand he holds a medicine jar of pure emerald, the radiance from which cures illness of body and mind - hence his other name: Yakushi Ruriko Nyorai, the nyorai of Emerald Radiance.

AKA Joju Kongo, 'the eternal and immutable diamond', Fudo Myo-o, the destroyer of the passions, represents the element of spirit or mind, the Diamond World Mandala, and subjective wisdom.
In his right hand, Fudo holds a sword which aids him to combat the 'three poisons': greed, anger and ignorance. He holds a rope with which to bind the evil forces and to prevent them from causing harm

Dai Bishamon Tenno
also: Bishamon Ten,
or Tamon-ten

Fugen represents all of the vows made by the Buddha and is a protector of those who teach the Dharma.
Fuken Bosatsu is said to provide his worshipperd with longevity, and take away their pain and suffering

In his right hand Jizo Bosatsu holds a six-ringed shakujo stick which he shakes to awaken us from our deluded dreams. He holds a jewel in his left hand, signifying his power to bestow treasures and wealth on all beings.
Protective amulets of Jizo Bosatsu Bodhisattva lend power to the weak, those who find themselves in dangerous situations, or who are in desolate places.
Jizo, is conceived of as a helper of the souls of deceased children, and is venerated as a savior of those suffering in the various Buddhist hells

Kanzeon Bosatsu
also:
Kannon Bosatsu
and
Kanjizai Bosatsu

'He who perceives the sounds of the World', Kanzeon Bosatsu made a vow to listen grant salvation to the suffering and the afflicted, and dispel the evil and calamities that surround us.
Kanzeon can manifest in any of thirty-three forms, the most common of these being:

• Sho Kanzeon - the Sacred Kanzeon
• Juichimen Kanzeon - the Eleven Faced Kanzeon
  
• Senju (Sengan) Kanzeon - the Thousand Armed (& Thousand Eyed) Kanzeon
  
• Nyoirin Kanzeon - the Wish Fulfilling Kanzeon
  
• Bato Kanzeon - the Horse Headed Kanzeon
  
• Fukukenjaku Kanzeon - with rope and net
  
• Juntei Kanzeon - the multi-armed (usually eighteen armed) Kanzeon

Kokuzo Bosatsu holds a wish-granting gem (nyoihoshu) representing joy and virtue, through which he bestows worldly blessings including happiness, wisdom and good fortune on all beings. In his right hand he carries a sharp sword which represents wisdom. provides of virtue from his unlimited sources.
It is said that, in his youth, the founder of Shingon Buddhism - Kobo Daishi
recited the mantra of Kokuzo one million times, and practiced the Kokuzo Gumonji-ho “The Morning Star meditation" - an esoteric discipline undertaken by devotees in order that Kokuzo will grant them increased intelligence.

Miroku Bosatsu is the buddha of the future: Maitreya, who currently resides in the heavenly realm of Tushita

Seishi Bosatsu vigourously seeks to awaken the Buddha nature/wisdom inherent in all beings and encourage them to grow towards enlightenment.
He possesses supreme power to steer people away from 'dark' paths.
Seishi also brings positive changes in luck, and his assistance is sought by those desiring to a chieve better levels of performance in training