The Starfish Spirits appear as a wiggly starfish drawn with a black crayon. In its center is a purple dot that acts as either its core or its eye.
These Spirits move about in small areas in certain places. If the Protagonist gets too near the Spirit, it will chase after her to kill her. It is so fast that its mostly impossible to outrun it. It kills by getting close enough to the player and then turn its core into a spear or drill that pierces the Protagonist, killing her.