Xenia is a ten-year-old swimmer. Her wetsuit, swimming goggles, rubber gloves, swimming cap, fins and nose-clips are all a vibrant pink colour. She is an expert breath-holder. She lives at a swimming hotel with her best friend and crush Olivia, who is nine years old, and her wetsuit, swimming goggles, rubber gloves, swimming cap, fins and nose-clips are all a beautiful green colour. The two of them are extremely affectionate, loving and flirtatious towards each other.