Ember.

Ember, nicknamed The Aristocrat, was woken up in a cage to a water challenge surrounded by 4 other guests Cory, Sarah, Fizzy, and Zold. She watched Zold die as she was freed from her cage, m returning to the lounge with the others. She gave suggestions as to what the code to open Fizzy's box was, however, she wasn't able to do much. She was voted into the third challenge along with Kale, and was killed by the demon by being dragged to hell. She is brought back in episode 7 as a demon to tortue the guests, and eventually is the cause of death for both Adonis and Fizzy.

Episode 2 - Icy Tales
Ember showed up in Episode 2 in her cage at the challenge before she was freed, and taken back to the lounge.

Episode 3 - Ticket To Hell
Ember helped suggest codes to open Fizzy's box, and even opted to try and take the gem, however, she was wrong both times. Due to her not doing much, she was voted into the challenge against Kale, where they had to try and spell the name Laurance. They got all of the letters, however, Kale got the name first, sentencing Ember to her death.

Episode 7 - Rising from the Embers
Ember was freed from hell and began to chase the guests eventually being the cause of death for Diamond. She tried to chase the guests for all the totems, yet didn't catch anyone. She led Adonis and Fizzy to the challenge, choosing to kill both of them before she was sent back to hell.