Guru Padmasambhab

Guru Padma Sambhava is popularly known as Guru Rinpoche, the precious teacher. He was powerful tantrik Buddhist master who was invited to Tibet in the eight century to diffuse the Buddhism in Tibet. He subdued many harmful influences and forces that hindered the spread of compassionate teachings of Buddha Shakyamuni. Through his miraculous powers and enlightened experiences, he taught many disciples who came out to be perfect masters of Tantrik Buddhism. He is said to have 25 great disciples who were instrumental in preserving the sacred teachings of Lord Buddha till today through their various manifestations.
Guru Rinpoche is said to have eight manifestations called Guru Tsangye in peaceful and wrathful posture. Through them he caused Vajrayana Dharma to spread widely in Nepal, India, Bhutan and Tibet. Guru Rinpoche is revered as founders in Nyingma or ancient tradition of Tibetan Buddhism. Tibetans believe Guru Rinpoche as no different from Shakyamuni Buddha himself.
Guru Rinpoche's body is depicted as golden in color. His hat is usually red. So, Nyingmapa is generally called Red Hat Sect of Tibetan Buddhism. He wears different robes of different colors symbolizing his enlightened experiences and attainments. His inner garment is white symbolizing clear light aspect of his mind and outer garment of red color which means he has deep and great compassion for all sentient beings. His outermost coat is brown symbolizing his renunciation. He is seated upon a lotus of alternating blue with red and green with orange petals.

Guru Milareppa

Guru Milarepa is believed to be the most beloved and highly accomplished Buddhist master of Tibet. His songs on enlightened experiences are still sung today by the learned and lay people alike. Guru Milarepa during his earlier career committed much evil deeds through black magic and sending hail storms too. He later regretted his evil deeds and eventually found his worthy and enlightened Guru Marpa, who put him on trials and hardships in order to test his Guru devotion and eagerness to practice Dharma teachings. He later conferred on him the series of empowerments and essential teaching of Mahamudra which he received from Guru Naropa. Guru Milarepa meditated on these Tantric teachings with great zeal in wild and forlorn mountains for six years and eventually achieved the realization of Vajradharahood in his very lifetime.
Millions of devotees took inspiration from his practice and validity of Buddhist teachings.
Guru Milarepa is generally seen on cotton clad dress seated over antelope skin with Lalitasana posture. He wears a meditation band. His right hand is generally put on the ears symbolizing that he is listening to the voices of beings in lower realms. He has great compassion for them and sentient being in general. His body is usually blue or green in colour. It is said that during his meditation he ate nothing but nettles for his long period of time and his skin thus assumed a greenish hue. Sometimes to represent his realizations, his body is depicted golden in color too.

Green Tara

Tara represents the entire enlightened activities of all Buddhas and hence she is called the mother of the Buddhas of three times. It is said in the sutra that Avalokiteshvara Bodhisattva saved an ferried over countless suffering beings from the sea of birth and death. It happened one day when Avalokiteshvara looked at the misery of the world he shed tears out of great compassion from his eyes. The tears turned into a lotus flower from which appeared white and green Tara who said to him, "Please don't be sad. We will assist you in liberating living beings, although they are countless, in number the power of our vows is also immeasurable".
Since then we had been liberating countless number of living beings daily. The name of Tara was thus known to all Buddhas in ten directions.
There are 21 forms of Tara. In reality, they are all the transformed bodies of Avalokiteshvara, the Buddha of compassion.
Green Tara appears as young beautiful maiden. Her body is green in color. She has one face and two arms, she wears a crown bedecked with five Buddha images. She wears all kind of Bodhisattva ornaments studded with jewels and celestial garments of varied colors. She sits on a lotus throne in Lalita attitude in half lotus posture. Her left hand shows the gesture of refuge vows and right hand the varada mudra because she is quick to answer the petitions of those who seek her aid. Tara is known as the great liberator from 8 kinds of dangers or fears. The cultivation of Tara sadhana will eliminate all demoniac and karmic obstacles, eradicates disaster and lengthens one's lifespan.

Vajrasattva

Vajrasattva is also regarded as Adi-Buddha by the Nepalese Vajracharyas who follow Vajrayana tradition according to the text Vajrasattvakaya. His body is white with one face and two hands. His right hand holds a five pronged golden vajra at his heart. His left hand holds a silver bell at his side. He sits in the Vajraparyanka posture wearing precious silks and ornaments with jewels diadem. His body is adorned with 32 major and 80 minor marks of Sambhogakaya and emits a clear limitless light. It appears to lack all notion of substantiality, like the reflection of moon in water.
Vajrasattva has father-mother aspect too. Generally this form is not exhibited in open. It is shown only tom those who are initiated in Highest yoga Tantra. His form is the same as in the single one but his consort carries a kartri in her right hand and a kapala in her left hand.
Vajrasattva is said to have been originated from seed syllable Hum and is generally invoked for the removal of obscuration of kleshavarana and jneyavarana. His hundred syllable mantra is very efficacious in purifying our defilements through confession practice. It is said if confession is done with the four opponent powers, then non virtuous action or obscuration will be purified. The first opponent power is the force of reliance. This means looking upon the visualized image of Bajrasattva as the embodiment of one's refuge. The second opponent power is the sincere regret for the non virtuous action done by oneself. The third opponent power is desisting from evil deeds. The fourth opponent power is to apply power of good deeds and especially regarding this case practicing the meditations and recitations of Vajrasattva without parting from Bodhicitta while remaining in the state of emptiness. Vajrasattva is a very popular tutelary deity of Nepalese Vajracaryas. He is worshipped very often by Nepalese Buddhists through Guru Mandalal ritual.

Amitava Buddha

Amitabha Buddha is also one of the five Tathagatas representing the wisdom of discriminating awarenesses. When discriminating wisdom dawns on us, we realize non-production or non origination of all things. He also represents purified form of desire. Amitabha Buddha is red in color. He is represented in a stupa facing to the west. He rides on peacock symbolizing that he can take away the suffering of others just as the peacock eats poisonous and yet his tail shines forth.
Amitabha in Sanskrit means immeasurable light or limitless light. He resides in the western land of unlimited bliss. He is assisted by two Bodhisattvas viz. Avalokiteshvara and Mahasthamprapta.
When he was in Bodhisattva, he was called Bhikshu Dharmakar. He made 48 vows to establish an adorned land of unlimited bliss of ferry over those living beings who recite his name. On the basis of those vows, any living beings who have faith, makes vows, and practices diligently he will be received by this Buddha and will be reborn in the land of unlimited bliss.
Amitabha Buddha presides over the Bhadrakalpa i.e. fortunate aeon. He always exhibits Dhyana mudra. He belongs to lotus family. He originates from seed syllable Hrih. He can be recognized by the symbol of lotus.
With his extensive vows and great compassion, this Buddha has ferried over innumerable sentient beings. The recitation of the name of Amitabha Buddha is a common practice in China and Japan. In Tibet too, devotees recite very often the prayers to be reborn in the land of Amitabha Buddha.