According to deadline.com or Nickelodeon it says, Zooli is "a spunky and smart character, animal expert and fin-tastic friend to the guppies' school class."
Zooli has dark skin and dark brown eyes. Her curly indigo hair is held up in a bun and has a blue seashell on the side. Like Oona, she has a full-pieced tail and almond shaped eyes. Her pink tail is spiraled.