Sukamuni
Sukha Muni was son of Veda Vyasa. He recited Srimad Bhagavatam to King Parikshit, heir of Pandavas, to help him attain Mukti during his last days. Srimad Bhagavatam is life story of Lord Krishna, an avatar of Lord Vishnu.
Once his father Veda Vyasa asked his son Sukha Dev to go to King Janaka and learn about Brahma Avastha from him.