Miss Circle is shown to be very cruel and violent. She shows no mercy towards students that fail in her class, killing them. She is also is known to play favorites, such as Zip, Oliver and Edward. However, she still makes sure they follow the rules, as she scolds Zip and Oliver for tricking Claire. Despite this, Miss Circle is also seen to be goofy and playful at times, but this could possibly just be a mask to hide her more murderous tendencies.