 The third Pandava, Arjuna, is a friend and follower of Krishna.Shri Krishna makes Hanuman realise that he and his friend Shri Rama are the same, and asks him to support him in his mission Hanuman does so, and the events of Mahabharata take place.Before the war, Pandavas (on the advice of Shri Krishna) invokes Hanuman to help him in the upcoming war.