Melody Russo is a child mermaid from Isla Paradiso. She loves the ocean. She have 1 brother and 2 sisters. Her mother is the famous singer Bella Hartley.
Melody is a beautiful and tomboyish 12-year old of average height and build for her age. She has straight black hair, most often tied back with a green rubber band in a low ponytail and blue eyes. Melody seems to have inherited a fairly even blend of traits from her parents. Most noticeable is her hair (the same color as her father's). She inherited her mother's eyes, smile, nose and facial structure. It is also possible that Melody inherited Bella's beautiful singing voice. Justin also gave her his skin tone and eyebrows. Melody wear a separate pair of white pantalettes and a white camisole; the pantalettes cover the bottom half of her stomach. As a baby, she was wearing a cute and very pretty pink and her bow also has the same color. While in mermaid form, her pantalettes and legs are replaced by a red tail. She also has a pink ball gown and a yellow casual dress both with short puffy sleeves. She wears her locket that has her name on it.
Melody's sassy and headstrong personality reflects upon the personality of her mother in her teenager years, but her insecurity around others and socially-awkward tendencies stem from her father. Her sense of adventure, curiosity and willingness to take risks exist in both Bella and Justin.
Melody's curious nature leads her to collect all sorts of items from the sea, a parallel to her mother when she was teen. Melody's swimming proficiency and ability to hold her breath for long periods comes from her mermaid parentage.
She is also shy around boys, becoming quite flustered when a merboy she found attractive tried befriending her. She later met him again, with both recognizing each other.