War for the Crown - Chapter 2: Songbird, Scion, Saboteur
These creatures were the torsos of humanoid figures with jagged claws that extend outward from a wall, their features patterned with the texture of the structure around it.
Similar to the undead monstrosities known as immured, walcofindes are pitiful undead creatures that manifest when a living being is sealed within a structure and perishes there. These unquiet dead often rise after having been intentionally walled into a structure. This process is what many have attributed its name to, with some treatises on undead referring to them as “wall-coffined.”