首長の妙な顔 (Heads with strange expressions)
There are two main variants of the Pier Monster. Similarities include the head that sprouts out of a worm-like appendage and the hair.
The first variant is white, with red, thin eyes and mouth.
The second is lavender, with a shocked expression complete with dark purple eyes and mouth.
Each variant has a sub-variant that has blood streaming from their facial features.
Some note that the Pier Monsters have a vague resemblance to Uboa.
As is default with non-NPC characters, the Pier Monsters cannot be interacted with.