Karna, a loyal friend
On the onset of Mahabharata war, Kunti, mother of Karna met him and revealed his identity. She told him that Karna was Kunti’s son and asked him to take the side of Pandavas. He replied that he can’t betray his friend Duryodhana. Krishna also revealed his identity and asked him to join Pandava side. Krishna assured him that being the eldest Pandava, he will be given the crown of Hastinapur but he refused this enormous offer for his friend Duryodhan. Though Krishna was sad with his decision but appreciated his loyalty.