Bubble wears a black overall dress with a white polo shirt underneath. Her head appears to resemble soap bubbles. There is a duck and a toothbrush on the top of her head. Her pupils are star-shaped, and her eyes are large and round. She also appears to expel bubbles from her head and has a trail of bubbles following her. Bubble is very kind and very popular in class. She's Claire and Engel's friends. She's also elegant, she'll always look out for the cleanliness of her friends in class.