Ugrasena

Ugrasena was the King of Mathura, a kingdom that was established after the various factions of Yadava, Vrishni and Bhoja clans decided that the dividing states would unite as one and that the Kingship would not be subject to heredity (but could be) and if decided not to be so, the succeeding leader would be chosen by a simple majority, therefore, a semi-democracy was established.

When the groups gathered, the uniting factions decided to throne Ugrasena as the king due to his skills in warfare and his humble nature towards domestic and foreign policy issues. Ugrasena was married to Queen Padmavati and was the father of Kamsa. Due to the tremendous power of Kamsa, Ugrasena declared him as the crown prince of Mathura, therefore guaranteeing the succession of kingship after his retirement or death. Later on, Ugrasena also installed Kamsa as the army commander.

However, due to hostile behavior of Kamsa and his ruthless actions towards the military members and the citizens of Mathura, growing friction began to occur the two, which led to the serious thought of whether Kamsa should be dethroned. However, before such action might take place and sensing change, Kamsa overthrew his father with the support of his father-in-law, King Jarasandha of Magadha and his immense military. After the coup, Kans imprisoned his father and kept him in the deepest pits of jail for a sustained time period.

After the death of Kamsa by the hands of Krishna, Ugrasena was installed the King of Mathura and ruled over the kingdom for a while. The crown prince under his second reign was Krishna's father, Vasudeva.