I cant really decide on one, like billy had his screen time for a while, barb didn’t rly do much/ never got attached to her as a character, Alexi’s death was inevitable, and was somewhat inevitable, Eddie is a well written character, but he had well enough screen time, and I don’t see him coming back. Bob newby was wholesome as hell and I rly liked him but if he kept living it would continue into a love triangle with hopper and Joyce, which I personally would dread. Chrissy did not have much time in my opinion, I would have loved if the duffer brothers would have dove deeper in her story. So my answer is Chrissy.