Lucifer as Manfred, the tortured Faustian noble who seeks mastery over magic in order to erase his memories or contact his beloved Castiel (Astarte), a sibling whom he loved incestuously and blames himself for the death of. The scene where the Manfred character is able to contact Astarte's ghost with the most heartbreaking outcome is one you might want to look at, but anything within the context of this play is fantastic.