Well... At least that DM stuck hard to his no PvP rule and wasn't one of the ones who says no PvP, then allows it anyway.

"I refuse to work with an evil person!"

attempts to murder someone while he's helpless, completely unprovoked

"I'm not allowing PVP."
"Fuck you, I'm PVPing. Now what happens?"
"You don't get invited to the next session, because I am not allowing PVP."

If anyone in my group would act like this, i would force their alignment towards Chaotic Evil so fast.

DM: "Wrapping a white robe around their body and a pointed hood over their head, the Paladin wanders off, still ranting about how holy and righteous they are and harassing anyone with dark skin that they meet with death threats..."

Time to take Luxia's paladin powers
"You're attacking an innocent you swore to aid"

"Chaotic Neutral" is not evil. Nowhere in it does it say evil.

Honestly the moment that player ignored the no pvp rule and rolled anyway I would have told him "No", then threatened to kick if he persisted, and then banned him.

It never ceases to amuse me how in stories like these the paladin is the backstabbing murderhobo and the edgy looking drow is the reasonable one. What's less amusing is the hate spam Luxia sent Lucian. Thankfully that bastard got his comeuppance by bring reported and barred from other campaigns. Also, props to the DM for not enabling his behavior by allowing PvP and for kicking the little turd to the curb when he kept trying to do so anyway. As for giving him that ultimatum of making Luxia the character more tolerable of Lucian or rerolling, I don't even think that was an option considering  all this happened in session one. Either way, hopefully Lucian gets her life together so she can come out of retirement because she sounds like a wonderful person to play with.

Yeah, Luxia is definitely a classic case of lawful stupid paladin.

The funniest thing I find about the first story is that one of my first characters was a Lawful Good Paladin who went out of his way to redeem or give second chances to people, and ended up marrying a Drow woman.

I played an albino Drow once. His goal was to pass as a surface elf and convert marginalized surface elves to the worship of Vhaeraun.

Luxia sounds like either a 10 year old, or a genuine troll/griefer. There's no way he was also always rolling above 17 on his pvp attempts

"I only wish I wouldn't see you now!"

"Then leave."

Problem player: DM said no evil characters.
OP: Understood, they aren't evil
😃
DM: Actually, they CAN play evil characters so long as it doesn't get in the way of the party/adventure.
Problem player: I slit their throat in their sleep on suspicion of them being evil!

They either have 0 self-awareness, were just using the "rule" as an excuse, or both... Probably both.

There's a difference between being a fair DM and being a pushover DM. If a player harasses another player, is warned to stop and continues to harass them then that player is gone. Thanks to letting Luxia keep up the aggression he was showing the DM almost ruined the game for Lucien. My advice is give a warning, then kick. No ifs, and or buts. Do not harass players at my table!

Look at Lucky, telling it like it is. So handsome and charming.

In the first story I would have banned the player immediately and told them to grow up.

Someone who claims to know about drow should know that elves NEVER sleep. They can't even be put to sleep! It's a major feature for them. They do rest and meditate, but for only 4 hours a day if they do it at all, and they're still aware when they do it. So you can't sneak up on a drow in their sleep and attack them. That's never been a thing.

I feel the solution is a DM that clearly sets a "no PvP" rule.
And hostility in the party only allowed if it really would make sense for the characters, but with the intent to de-escalate.

Then, negociate/debate between the players to why there would be hostility between their characters and plan ahead to how the situation could improve.

I find it extremely important as I love exotic and weird character races and builds.

I'm actually playing a half drow in a campaign now. He's actually the only sane man in a party of chaotic idiots

Perpetually tired, a caffeine addict, and master wizard in training. He's a ton of fun to play.