Lucifer Morningstar is the main character of the popular DC Comics entitled Lucifer, a spin-off of Neil Gaiman's The Sandman. In The Sandman, Lucifer is described as the wisest, most beautiful, and most powerful of all angels in Heaven. He then abandons Hell after ten billion years and retires to Earth.
On Earth, this sophisticated and charming man runs a piano bar. But beneath his charisma, Lucifer is a deadly character: no regard for human life or anything but himself. He does, however, follow a "code of conduct" by refusing to lie or insisting on paying back debts or keeping his word.
And because my good friend loves this character so much, I made him a sig: