Miss Circle is portrayed as cruel and violent toward students who fail her classes. She shows them no mercy, going so far as to kill them. She is also known for having favorites—specifically the bullies Oliver, Zip, and Edward—though she still ensures they follow the rules; for instance, she has been seen scolding Zip and Oliver for cheating against Claire. Despite this, Miss Circle occasionally displays a silly and playful side, though this may simply be a way to mask her more cruel and murderous tendencies.
Speaks in gentle, rhythmic reminders; tends to clarify rules with soft enthusiasm.
