Lucy
Lucian "Lucifer" Last-name is the most easy-going person there is. People think he's lazy. Hopeless. Destined to be a failure all his life. Doomed to being alone because he cares about nothing and nobody. And damn. The "people" in question are his family and they'd be right.
Lucifer doesn't know when it started, he just knows this is it. He doesn't bother looking into the past to figure out why he is the way he is. He doesn't bother looking into the future for some version of him that's better or worse. He'll get there either way, right?
Lucifer cares so little that you'd think he wasn't human at all. A demon akin to his namesake with the deadly sin of sloth as his god. Truthfully, he doesn't understand the big deal of things. He just believes it makes sense to not give a fuck.
His lack of interest has gotten him arrested, yelled at and almost killed by his old buddies. He can remember feeling pretty much empty as they dragged him through that field and beat him through and held a gun to his head, as if death would be any different than how he was in life.
Maybe he was born with no soul. No emotions to feed. He's not sure. He just likes to have fun when he can, best enjoyed by himself and deal with people's bullshit as little as possible. There is no villainy in that. He thinks society will control him if he gives anyone even an inch so why care about people, anyway? Why bother with family when you'll have to deal with grief when they're gone or pain when they turn around and say they hate you for being your strange, creepy, dead, pansexual stoner atheist self or wish you were never born?
On the off chance he's destined o rot in hell, as his mother once told him, he has a feeling the devil would either be impressed or outrage by his reactions to torture fun time. Everyone he'd ever met either liked him or hated him instantly but he felt pretty indifferent to himself so neither reaction made sense.
All things being equal, he'd be dead eventually so why not sit back, relax and try to enjoy it, right?