This is an NPC, or a non-player character.
The Mysterious Cultist is a NPC which was added as part of the Halloween Week 2014 update. It appears on a special event that usually occurs several days before Halloween Week, visiting random player's worlds, usually being the World Of The Day. Cultist wears a Special Cultist Hood, Ancestral Tesseract of Dimensions, and a Cultist Robe.
When visiting random worlds, the Mysterious Cultist can leave after a short amount of time. NPC talks in a blue colour and walks around the world. Some of its lines are:
- Silence mortals! You are not worthy.
- You cannot stop the awakening.
- It knows only hunger, only hatred.
- Shadows grow longer, something waits in the silence.
- Growga Growga phtah PHTAH.
- Cling your sanity while you still can!
- It is older than this world.
- K'Tesh an perok mos kalah!