Bubble Stars are one of the enemies in the Run 'N Gun level Perilous Piers on Inkwell Isle Three. Bubble Stars are little starfish trapped inside a bubble which can be yellow with two buck teeth in the sides, orange with little eyelashes and one buck tooth in the center, or pink with little eyelashes and one buck tooth in the center. In our fanart Cuphead cursor, you are lucky to see two of them. Bubble Stars appear during the section against Kaptain Krustacean - they float up from the sea, making them obstacles for the player.