Evelyn is a twelve-year-old swimmer. She has long blonde hair tied in a ponytail. She always wears a navy blue wetsuit, a pair of purple swimming goggles, a pair of light blue gloves, a magenta swimming cap, a pair of green fins and a red snorkel. She lives in a house with her two little twin sisters Ella and Evie, who love swimming just as much as her. They all attend a swimming school where all the students are female.