1 Whumper X Multiple Whumpees, but Whumper has a favorite Whumpee.
Fav!Whumpee who gets extra food, more rest, more water, preferable sleeping conditions, just more perks in general. Fav!Whumpee feels immense guilt for getting these things knowing full well how the other whumpees are being treated, despite knowing this Fav!Whumpee is too scared of Whumper to dare try to do anything to make themself not Whumper's favorite anymore. Fav!Whumpee knows that falling out of Whumper's favortism means a far worse fate than just becoming another Whumpee again.
Fav!Whumpee being forced to help Whumper torture the other Whumpees. Fav!Whumpee being forced to be the one to execute any of the other whumpees. Because of this Fav!Whumpee doesn't believe they deserve to be saved, they come to believe that they deserve all the torture Whumper inflicts on them.
At least some of the other whumpees see Fav!Whumpee as a Whumper. If Fav!Whumpee heard this, they'd agree, they stopped seeing themselves as a victim of this treatment a long while ago. They've convinced themself that the torture and abuse Whumper puts them through is just karma for the things they've done.
Being Whumper's favorite doesn't save Fav!Whumpee from Whumper's sadism, if anything they get some of the worst treatment of all the whumpees, their bruises and scars are just hidden under soft long sleeves, their bruises hidden under expensive makeup.
Fav!Whumpee is scared of rescue, because Whumper loves to remind them of all the things they've done to the other whumpees, and likes to tell Fav!Whumpee that they'd be going to prison just the same as Whumper for their participation. That no one would ever believe them in a court of law that they (Whumper and Fav!Whumpee) aren't a partnership, and that any court would believe that Fav!Whumpee is equally as guilty for the things Whumper did. Sometimes Whumper will (half jokingly) say that they'd insist that it was actually Fav!Whumpee who was the mastermind behind everything, this terrifies Fav!Whumpee.
Fav!Whumpee was once the most hated of Whumper's Whumpee collection, they were the weakest, slowest and as far as Whumper saw them, comepletely useless. There was infighting between the Whumpees (All the Whumpees are kept in a single cell with mutiple beds) and Fav!Whumpee was forced to kill another Whumpee in self defense, their method was particularily brutal (literally bashed their skull fully in), but only because Fav!Whumpee had no other options, and was fighting for their life, they knew this would only end with one of the two dead.
Despite how Fav!Whumpee insists that they didn't want to kill, Whumper refuses to believe them (or they fully know Fav!Whumpee is telling the truth, but chooses to insist otherwise), and instead claims they saw a "murderous passion" in Whumpee's eyes (Whumper had walked in at the tail end of the attack), and that Fav!Whumpee must've really enjoyed the act of killing. Eventually Fav!Whumpee is worn down, and begins to question if Whumper is actually right, that maybe Fav!Whumpee did enjoy killing.
Fav!Whumpee had always imagined (hoped, & prayed), that if rescue ever came, that they'd be shot and killed alongside whumper during the rescue because they don't believe they deserve rescue, but they know Whumper has to die, and they NEED to know whumper is fully dead before they themself die.
When rescue comes, Fav!Whumpee is the only surviver (this was by Whumper's design, Fav!Whumpee still blames themself for this).
Whumper may or may not have died in the explosion that killed the other Whumpees, the uncertianty of this eats away at Fav!Whumpee.
Part of me wants to actually write this story, but also that means taking on an entirely NEW story while I already have SO FUCKING MANY WIPs, with that being said, I doubt I'll be able to resist writing at least SOME scenes of this story because there's SO MUCH potential for whump here!!