The Ghost Girl was an Easter egg found only in the 15.9.0 update.
It appeared to be a blue-ghost version of the Female Survivor. The Ghost Girl was holding a Rubik's cube.
- Even though Female Survivor appeared as a ghost, it was never shown in the Story Comic that she was a ghost (or how she became as such), unlike Newbie.
- The Rubik's cube only indicated the presence of the boss Cubic.