Prince of the devils, Lucifer was once an angel of God who was cast out of heaven with other rebel angels because of their pride and insolence.If Mephistopheles is a conflicted devil, Lucifer shows no such weaknesses or signs of remorse for having been cast out of heaven.When Faustus cries upon the name of Christ, Lucifer comes, as though Mephistopheles is not crafty enough in such urgent cases.