Vimalananda (also called Khagen Maharaj) (1872–1908) was one of the monastic disciples of Vivekananda and an early monk of the Ramakrishna Order. He was involved in the publication of Prabuddha Bharata. He was actively involved in running day-to-day operations of the Advaita Ashrama at Mayavati during the early days of the Ashrama. He also inaugurated the Ramakrishna Math at Ulsoor in Bangalore in 1906. He died in 1908 at the Mayavati Ashrama.
Khagendranath Chatterjee was born in a Hindu Brahmin family in 1872. His father, Benimadhav Chatterjee, was an engineer. His cousin Haripada Chatterjee, later Bodhananda, was also a monastic disciple of Vivekananda. He was interested in philosophy and spirituality from an early age and by the time he joined Ripon College, he was the leader of a group actively pursuing a spiritual life. Also in the group was Kalikrishna, later Virajananda, another monastic disciple of Vivekananda and a president of the Belur Math. In 1890 he passed his matriculation examination and earned a scholarship. He continued with his First Arts studies in Ripon College. Khagen was initiated to Ramakrishna's ideals by reading a collection of his teachings by Sureshchandra Dutta and a biography of Ramakrishna by Ram Chandra Datta.They visited Kankurgachhi Yogodyan on the occasion of celebrating Ramakrishna's birth festival by Ramchandra Dutta. In Ripon College he came in close contact with Mahendranath Gupta, (called M), the author of Sri Sri Ramakrishna Kathamrita, who was then a professor in the same college. M inspired them to visit the monastic disciples of Ramakrishna in Baranagar Math. In 1892 he went to Jayrambati and met Sarada Devi. He was later initiated by her into spiritual life. He gave up his studies on account of poor health and spent more time in the monastery in the company of the disciples of Sri Ramakrishna.