Neem Karoli Baba known as Maharaj-ji - was a guru, mystic and devotee of Hanuman. He is very well known outside India for being the spiritual master of a number of prominent Americans who traveled to India in the 1960s and 70s, including spiritual teachers Ram Dass, Bhagavan Das, and musicians Krishna Das and Jai Uttal. His ashrams are in Kainchi, Vrindavan, Rishikesh, Shimla, Neem Karoli village near Khimasepur in Farrukhabad, Bhumiadhar, Hanumangarhi, Delhi in India and in Taos, New Mexico. Maharaji was a lifelong adept of bhakti yoga, and encouraged service to others (seva) as the highest form of unconditional devotion to God.

Facts are few, stories many. He seems to have been known by different names in many parts of India, appearing and disappearing through the years. His non-Indian devotees of recent years knew him as Neem Karoli Baba, but mostly as "Maharajji" – a nickname so commonplace in India that one can often hear a tea vendor addressed thus. Just as he said, he was 'nobody'. He gave no discourses; the briefest, simplest stories were his teachings. Usually, he sat or lay on a wooden bench wrapped in a plaid blanket while a few devotees sat around him. Visitors came and went; they were given food, a few words, a nod, a pat on the head or back, and they were sent away. There was gossip and laughter for he loved to joke. Orders for running the ashram were given, usually in a piercing yell across the compound. Sometimes he sat in silence, absorbed in another world to which we could not follow, but bliss and peace poured down on us.

Ram Dass was an American spiritual teacher, guru of modern yoga, psychologist, and author.

Krishna Das is an American vocalist known for his performances of Hindu devotional music known as kirtan. He has released seventeen albums since 1996.