FleshCousin will have the same avatar as one of the players in the server, except for the face, which is a slightly distorted version of the default (Smile) face.
Its undisguised form has been shown to be a gray R6 rig wearing what resembles a piece of paper on its head with a crudely drawn smile face.
Unlike other NPCs, FleshCousins are said in lore to be an entire species of entities rather than just one member. They aren't fully sentient, with animalistic intelligence comparable to birds/fish