Cleo Sertori is played by Phoebe Tonkin

At first she was shy and a little awkward, but eventually became outgoing and personable. She is able to manipulate and mold the form of water, as well as increase or decrease the amount of water present. She is later able to control the wind. She is best friends with Emma Gilbert and Rikki Chadwick.She is cheerful, and she loves her friends and family.