Don Giovanni is an NPC that is found in Orkestra Temple.
Don Giovanni is a Troubled Man-About-Town who signed a contract to Faust in exchange for wealth, power, and romance for the rest of his life and be taken to the Underworld when his life is over. Unfortunately, he didn't notice the fine print in invisible ink on the back of the contract that states that he will be dragged to the Underworld by the end of the week.
He turns to the players to steal the contract back from Faust in order to destroy it. When the player does, Don Giovanni tells them what they need to know about Discordia and then plans to renounce he evil ways.