KalKal
Superstar
Where did y'all get the idea that it would be something 'supernatural'? That was never in the cards. I'm glad they kept it grounded and realistic.
Half the viewers were convinced that the Yellow King was a Lovecraftian horror being:
Hastur
Hastur, also known as the Yellow King, is a fictional cosmic entity that first appeared in Ambrose Bierce's short story Haïta the Shepherd (1893) and was later expanded on by Robert W. Chambers, H.P. Lovecraft and August Derleth. He could be considered as the unseen antagonist of Season 1...
true-detective.fandom.com