Ancient Greek's phontes; Modern Greek foniás (φονιάς).
The words "demon slayer" in Greek would be Δαίμονας φονιάς or Daimonas phonias
The Perseus of the Greek myths is the slayer of the gorgan, Medusa. In The Lightning Theif, Perseus is Percy's full name. Percy is the son of Poseidon, god of the sea.
Poseidon was the Greek name for the god of the ocean.
roman = Pluto greek =hades Your question makes little sense. The Greek name for the Greek god Hades is Hades. His Roman name is, as mentioned above, Pluto.
The Greek god Ares (Roman name: Mars) was the god of war.
There is no Greek god of books but there is a Greek goddess of wisdom her name is Athena.
Vulcan(us) is the Roman name of the Greek god Hephaestus.
Mars was the Roman name for a god they likened to the Greek Ares.
The god of grapes/wine. In Greek it is Dionysus. Bacchus was the Roman name.
His Greek name was Hermes.
His greek name was Hephaestus.
His greek name is Hephaestus.