In the epic Mahabharata, Drona (Sanskrit: दà¥à¤°à¥‹à¤£, droNa) or Dronacharya (दà¥à¤°à¥‹à¤£à¤¾à¤šà¤¾à¤°à¥à¤¯, droNÄchÄrya) is the royal guru to the Kauravas and the Pandavas. He was a master of advanced military arts, including the devastras. Arjuna was his favorite student.