The Scripulous Fingore enemy actually doesn't exist; I believe the idea of this is centered around the pointing hands that you see in a Ghost House or two in NSMBDS. Those are not enemies: They actually help you, and are not out to kill you. They help you by pointing at a moving Hidden Block that usually contain power-ups or switches, and stop once the block is hit and exposed.
I study Mario games, so I think the Scripulous Fingore, if it does exist, is not an enemy, yet the head is invisible; only the pointing hand can be seen.