Esoculus

The Esoculus is a bizarre type of enemy found in Karthot at night, sometimes as early as 9:00 PM. They are shrill, slender humanoid figures with droopy, eyeless faces, loose skin, sharp nails, and slightly agape mouths. Although blind at first, they can hear the player, letting out a blood-curdling scream once aggravated. A short moment afterwards, a veiny eye attached by a tendril of granulation tissue will emerge out of the Esoculus' throat, locking onto the player as it sprints towards them at a surprisingly fast pace. If the Esoculus touches the player, it will rapidly inflict Gash damage, causing them to bleed out even if they manage to kill it.
The only way to damage an Esoculus is by landing a critical hit or headshot. They're only somewhat susceptible to knockback and can grab the player at close range, killing them by either snapping the player's neck (or in Peyero's case, embedding its nails into his eye). More often than not, it is best to avoid traveling through Karthot at night, although Esoculi do not spawn during Blood Moons or Blighted Moons and can be slowed down with Ice damage. Fire and Bleeding can stunlock an Esoculus or cause it to fall to the floor, provided that the initial attack was a critical hit.
Lastly, the health and damage of an Esoculus depends on the player's progression, making them a threat to the player regardless of how good their weapons are.
==Trivia==
*The term "Esoculus" is a portmanteau of the words "esophagus" and "oculus".
*Esoculi are based on the Shirime, a Yōkai from Japanese folklore that takes on the form of a humanoid figure with an eye replacing its sphincter.