Pegasus and Bellerophon

The real rider of the famed winged steed was a man named Bellerophon who used the horse Pegasus to destroy the Chimera. Emboldened by this venture he tried to fly to Olympus but Zeus sent a gadfly to sting Pegasus who bucked Bellerphon off and to his death, Pegasus was the child of Medusa, a snaked haired monster woman.