Lucifer is the firstborn brother and Avatar of Pride. He has been the assigned assistant of Lord Diavolo since his brothers' fall from the Celestial Realm and has worked constantly since. He mainly deals with the paperwork, but since his deal with the council could mean execution for low effort, he loses much sleep and is quite anxious. He uses Demonus, or Devildom wine, to help keep himself calm, which is leading to an addiction.