Ramakrishna (18 February 1836 – 16 August 1886), born Gadadhar Chattopadhyay(Gôdadhor Chôṭṭopaddhae), was a famous mystic of 19th-century India. His religious school of thought led to the formation of the Ramakrishna Mission by his chief disciple Swami Vivekananda He is also referred to as "Paramahamsa" by his devotees, as such he is popularly known as Ramakrishna Paramahamsa.

"The true basis of religion is not belief, but intuitive experience. Intuition is the soul's power of knowing God. To know what religion is really all about, one must know God," said Paramhansa Yogananda in the book "The Essence of Self-Realization".

Mahavatar Babaji is the name given to an Indian saint by Lahiri Mahasaya and several of his disciples who met Mahavatar Babaji between 1861 and 1935. Some of these meetings were described by Paramahansa Yogananda in his book Autobiography of a yogi, including a first hand telling of Yogananda’s own meeting with Mahavatar Babaji.

Canchupati Venkatrao Vencasami Rao was born in a Niyogi family which had migrated from the Andhra area in the 14th or 15th century. He had his elementary education at Kumbakonam, and his secondary education at Srirangam. Around the age of 18, he came across theosophical literature.

Sri Ram SIR, the facilitator of the workshop is a spiritual-scientist, psychologist, philosopher, poet, author, speaker, seer and sage. With a basic degree in science SIR did his M.A., M.Phil. and Ph.D. in English. He has done an extensive research on spirituality, happy living and uninterrupted joy in the laboratories of life and nature.

Ramana Maharshi (1879–1950) is widely acknowledged as one of the outstanding Indian gurus of modern times. He was born as Venkataraman Iyer, in Tiruchuli, Tamil Nadu (South India). At the age of sixteen, Venkataraman lost his sense of individual selfhood, an awakeningwhich he later recognised as enlightenment. A few weeks thereafter he travelled to the holy mountain Arunachala, at Tiruvannamalai, where he remained for the rest of his life.

Sri Aurobindo (Sri Ôrobindo, Bengali: শ্রীঅরবিন্দ) (15 August 1872 – 5 December 1950), born Aurobindo Ghosh or Ghose (Ôrobindo Ghosh, Bengali: অরবিন্দ ঘোষ), was an Indian nationalist, freedom fighter, philosopher, yogi, Maharishi, guru and poet. He joined the Indian movement for freedom from British rule,

Maharaj Charan Singh Ji (1916 - 1990), was born in Punjab, India and was the eldest son of Harbans Singh Ji and grandson of Baba Sawan Singh. He became the fourth Satguru of Radha Soami Satsang Beas (RSSB) in 1951 following the death of Sardar Bahadur Jagat Singh, and served until his death at the age of 73. Before his appointment as successor he practiced law in Hisar and Sirsa. He was an initiate of Baba Sawan Singh Ji and was the successor of Sardar Bahadur Jagat Singh.

Meher Baba (25 February 1894 – 31 January 1969), born Merwan Sheriar Irani, was an Indian spiritual master who said he was the Avatar, God in human form.

Vivekananda was born Narendranath Datta (shortened to Narendra or Naren) at 3, Gourmohan Mukherjee Street in Calcutta, the capital of British India, on 12 January 1863 during the Makar Sankranti festival. He belonged to a traditional Bengali Kayastha family and was one of nine siblings.His father, Vishwanath Datta, was an attorney at the Calcutta High Court.