I'm going to assume that you're asking which son of Zeus killed Medusa, in which case the answer would be Perseus.
Perseus
possibly, if Zeus did not turn into his immortal form first, which would vaporize medusa the insant she looked at him.
Yes, Hermes is the son of Zeus because forgetting he had a wife (Hera) Zeus impregnated Maia
Poseidon was Medusa's boyfriend and they were hanging out in Athena's temple. Then Athena turned Medusa into Medusa.
Perseus.
I'm going to assume that you're asking which son of Zeus killed Medusa, in which case the answer would be Perseus.
Zyzz Shaversarian
Perseus was the slayer of Medusa and owner of winged sandals.
Hercules was the son of Zeus. He killed the snake-headed Hydra, but she was not usually called a Titan.
No, he did not. The hero Perseus killed Medusa. Perseus was also Zeus' son but his mom was mortal.
demigod son of zeus, killed medusa
Perseus is the demigod son of Zeus that slayed Medusa.
Perseus, son of Zeus, killed Medusa because she turned people to stone -- essentially, because she was a murderer.
Perseus, the son of Zeus and Danae.
What Perseus is most famous for is for being the son of Zeus and killing Medusa.
Perseus