Callie is Carrie's younger sister. She has a short ponytail with an electric guitar shaped barrette. She prefers to be alone sometimes. She is very emotional and sensitive. When she is furious she evolves and transforms into Nightshade and attacks. However she is actually proud and happy almost everyday. It takes her about 3 days until a kid becomes her friend. She has only 7 friends. Speaking of which,she is very good friends with Anais,Clare,Molly,Masami,Rachel,Gumball,and Darwin. Callie is also shy at the moment but not all the time. She cries when she's stressed. Her favorite subject Art.