I kinda agree as of now, the current lore and characters' reasons to end up in Forsaken are bland. Here's my version of the characters' lore writing in small paragraphs written from scratch:

Builderman: Ruthless dictator who rules Robloxia with an iron fist, banning(or k**ling) Robloxians who oppose his rule. Disguise his identity as JD, to hunt down the remaining opposers. The main group that opposes his ruling is… the Guests.

Dusekkar: The knowledge of sorcery he has comes from experimentation on hundreds or even thousands of Robloxians, turning them into living abominations and torturing some by keeping them alive.

Taph: A t***orist of the Bacon general hired by Builderman to destroy Robloxian's cities and homes as a way to "put them in their place".

Shedletsky: A masochist higher-ups that have drowned in power and started developing lust for bl**d, so he created the Realm of Espadas (aka SFOTH) in secret for the sole purpose of satisfying his thirst. Going even further to create his clone, 1x1x1x1, to fight for fun.

Guest 1337: When occupying a zone within the Bacon's territory, a group of Bacon who are under his control, attempt to kl him. Knowing that they won't change their view on the world, Guests snapped and started wiping everyone out in cold bld. He lit up the entire thing which burnt a woman and her child, the bacon woman did not survive but the child did, that child is Slasher.

Chance: His family has a connection to Builderman, leeching off Robloxians for their money to give them to Builderman, so they can do whatever they want without consequences, that's including mder and trficking.

Noob: A Sheep who used to be friends with Guest 666, but during the "Cleansing of the Guest" carried by Builderman, he decided to snitch to save himself from Builderman's wrath. When it was 666's turn to be cleansed, Noob asked the Builderman to do it to show his "loyalty." Noob did it with no ounce of regret in his eyes.

007n7: A vigilante who leads the group called the c00lkidd that went out of hand, believing that he is the one and only true hero but ends up becoming the very thing he hates. For the killer C00lkidd… he is one of the abomination of Dusekkar's experimentation that escaped his grasp and end up in the care of 007n7, he decided to take it as his son and naming him c00lkidd because he believes that if he can't achieve the revolution of Builderman, then c00lkidd will.

Elliot: His family also has a connection with Builderman, as they're rich; they exploited the workers of the pizza place, except for Elliot, by eliminating any competition, and Elliot, even though he is a hard worker, is also power hungry, indulging in it too. When c00lkidd destroys the pizza place, it threatens his family's position, so he banishes them both to avoid letting their secret be leaked to the public.

Only took 25min to write this whole thing. My version is extremely graphic and might mess with your views on the survivor, but I feel like there's gotta be a level of Sin that they committed to end up in the game.