Vulcan(Roman) or Hephaestus(Greek).
halfbloods
Juno
Vulcan
Jupiter's name comes from the roman king of the gods: JupiterWhich, by the way, is the Roman name for the Greek God, Zeus. jghghghgh
Zeus
Saturn and Opis.
Mar, the god of war.
Because jupiters the biggest planet therefore the king of gods in greek (Zeus) or the king of gods in roman (Jove) shows there power.
All the planets are named after Roman gods (Mercury, Mars and so on). Saturn was the Roman equivalent of the Greek god Kronos the Titan, who was the father of Zeus and his 5 brothers and sisters. The name Saturn is possibly from the Latin word for "to sow" as Saturn was the Roman god of agriculture amongst other things.
Volcano came from Vulcan, the roman name of Hephaestus, the blacksmith of the Greek gods. It was believed that when he forged weapons, sparks would fly up and cause volcanic eruptions.
Hephaestus
The dwarves were famous blacksmiths in Norse Mythology. They forged Thor's hammer.