I haven’t used sprites for anything but textures on a hud so I’m not sure if you need to use materials or not. Nut if you are using materials, unless it’s semitransparent, you may want masked mode. Then you can use a separate "silhouette image (or a visibility mask in the alpha channel) This would work for translucent as well but I’ve had things go invisible there because they are a bit see-through everywhere.