Jupiter is the Dominion of Thunder and Lightning that the Four Archangels serve.
Jupiter have the angels Io, Europa, Callisto, and Ganymede as his servants. 
He fought on the battlefield during the First Demon War, which ultimately led to his death at the hands of the Demon God Heitaros.
Jupiter soon awaken on Adel Frost.
Adel Frost is the firstborn son of the Frost family and he has twin-elder sister named Edel Frost.
Formerly a Human, it was revealed that Adel is the reincarnation of Jupiter