Bubbles is portrayed as having blonde hair in two pigtails and a neat, curved fashion and sky blue eyes. Her dresses are sky blue with a black-centered stripe and she wears white tights and black Mary Janes. The outro refers to her as "the joy and laughter," meaning that she is defined as very sweet in personality.
Bubbles does have a tendency to be overly emotional, despite having a habit to be ditzy, naive and sensitive, leading to her sometimes being regarded as the group's weakest link.