The Slime zunge (tongue) is a wall-mounted alien buildable that ejects a ‘tongue’ to its victims and pulls them in to munch on them. The slime needs a (seemingly) visible way to stick to a surface, and should have something at the middle that interacts with players as it hurts them.
wormy tubes on the side suck into surface and ooze some stuff. slime filled sacs to shoot a slimey tongue out. some pointy teeth and a beak thingy await you at the middle. small claw things on the sides to help dig into a surface too… creep would also be underneath this