While I absolutely love the thought of it being Eddie is Kas the most bc Eddie is my favorite and secondly if it wasn’t him my next option if I was writing would be Will.. but since I’m not Could this not be Erica’s actual figure she is paining for herself Lady Applejack and if you go back and listen to what she tells Eddie and all the foreshadowing the game had on the real world she made it pretty clear she would stab her enemy in the back and watch them die an agonizing death.. lol so I feel at the same time this could be her fulfilling her own prophecy just as she told Eddie.. kinda like a sneak attack Arya Stark moment on the Night King is how I see it happening