Annie and Angie are a set of nine-year-old identical twins with brown hair and brown eyes. Both of them love swimming, and they always wear their green one-piece swimsuits, pink wetsuits, lavender swimming goggles, purple rubber gloves, light pink swimming caps with hearts on them, amethyst purple swimming socks and pink swimming shoes. Angie also wears a pair of pink fairy wings, a tutu and a tiara. The twins are rarely seen with each other, as they have different interests. Annie is very energetic and participates in swimming squads, while Angie is very timid and shy, and is part of a swimming group known as the 'Fantasy Swimmers'. The two girls live at an all-girls boarding swimming school from ages 5-13.