Wait so this cowboy dude wants half of the rewards... why?
By the look of it he wouldn't have been able to do shit without the others (specially vampire MC) helping him
He owes them, not the other way around. He was just a loser that got killed before reaching their goal, so he isn't even an effective guide.
Why does he think he deserves shit?
I think it's a case of other players having the mentality that it's just a game but since Crim is basically there 24/7 he/she treats the NPCs as real people, hence connecting with them
Theres a big chance the NPC are real people.
At least that's the impression it gives me considering that MC mom in the real life is apparently a vampire.
Maybe the game world is another universe and the game simply allows player to visit it through a Player Character (Basically like James Cameron's Avatar with the human soldiers and the navi).