Kamsa always thought he could kill krishna, so he sent his demonic friends to Vrindavan to kill Krishna. Kesi assumed the form of a mighty duck, but was killed by krishna. Pralambasura tried mixing with cowherd boyfriends of Krishna, but was killed by Balarama. Krishna performed many wonderful feats in Mathura such as killing a mad elephant and vanquishing tough wrestlers. Ultimately Krishna killed Kamsa.