Carla Cylinder is one of the main characters from ShapeTales and she is Charlie Cylinder's best friend. She lives in the city of Pluggslyville with her parents, Mom and Dad Cylinder, as well as her two younger brothers, Lanny and Baby Leo. Besides being best friends with Charlie Cylinder, she is very close with other Shape kids such as Perry Semi-Circle and Ellie Pyramid. She is also good friends with Jimmy and Alvin.