Alexa is a three year old girl and the main character of the book Potty Training Is Fun. She is a brunette with several tops and a purple dress. She always thought kids that were potty trained seemed very grown up, but at the same time wondered why her parents were happy that she was learning. Her favorite foods are cake and pizza, her favorite colour is purple, and she has an older brother named Ben and a doll named Kelly. She has attempted reading, defining the word "relaxing", peeing standing up and playing with the toilet paper. She asked to stop wetting the bed in her prayers.