Shishupala

Shishupala is a major enemy of Krishna. He is the cousin of Krishna and the son of Damaghosha and Shrutashrava.

Birth
Shishupala was born to Damaghosha and Shrutashrava in Mathura. Unfortunately, he had a demon-like figure when he was born with three eyes and four hands. Shrutashrava was very much worried, if people would kill him since he is deformed. She wept bitterly and prayed to God to give him a normal form. The god heard her prayers and said that if he is placed on the lap of a 'special' person, he will regain a normal form but the death of this child, will be at the hands of the same person itself. The baby was placed on everyone's lap but the child Never becomes normal. Finally, when the child is placed on Krishna's lap, the third eye and the extra two hands vanish, thus, giving the boy his normal form. Everybody, in Mathura realise that Krishna will be the one to cause Shishupala's death. Shrutashrava is stunned and is unable to believe it, since, she loved Krishna like her own son. She begs, Krishna not to kill Shishupala and forgive his mistakes. Krishna comforts Shrutashrava and assures that he will forgive Shishupala's 100 mistakes and will kill him when he commit his 101st mistake.

Rivalry with Krishna
Rukmi and Shishupala were best friends and Rukmi always advised his sister Rukmini, to marry Shishupala. However, Rukmini wanted to marry Krishna and asks him to did so, on the day of Rukmini's marriage, Krishna takes away Rukmini. Thus, creating an enemity between Krishna and Shishupala. To revenge, this he starts to bully Krishna about how he used to take care of cowherd and starts to insult him.

Death
When Yudhishtira undertook the Rajasuya Yajna, he sent Bheema to obtain the fealty of Shishupala, now king after his father's death. Shishupala accepted Yudhishthira's supremacy with no protest, and was invited to the final ceremony at Indraprastha. At that event, the Pandavas decided that Krishna would be the special honoured guest of the sacrificial ceremony. This angered Shishupala and he started insulting Krishna, calling him a mere cowherd and worthless to be honoured as a king. He also started insulting Bheeshma, calling his vow to remain a celibate throughout life as an act of cowardice. Bheeshma became furious and threatened Shishupala, but Krishna calmed him down. Through this act, he committed his 100th sin and was pardoned by Krishna. When he insulted Krishna again, he committed his 101st sin. Krishna then released his Sudarshana Chakra on Shishupala, killing him on the spot. Shishupala's soul was liberated and attained salvation by merging into Krishna's body.