Miss Circle is the main antagonist of the hit online short Basics in Behavior, which is a part of the Fundamental Paper Education series by Kaaatie. She is the math teacher of the Paper School and an abnormally tall (9'7 foot however, she can change her height any time) woman with a large compass/protractor tool for an arm. She teaches math class and consumes and tortures any of the children in her class who fail. Her voice is provided with the Google Translate Japanese text-to-speech voice.

"They are the best teachers ever! They are kind to all students! It would be great if you listened to them!" - Kaaatie

Classroom rules

• No running in the classroom
• Listen to your teacher
• Do not breathe in the classroom
• Miss Circle is the most beautiful teacher
• If you have Oreos, give them to me!

The classroom has an appearance similar to that of an ordinary classroom, with desks and shelves full of books. It can also be noted the classroom has a few plants, and planets on posters and hanging from the ceiling.

As for the front of the classroom, a blackboard has many math equations written on it. Beside the blackboard, there is a cabinet with a bookshelf behind it, with MoeMoe resting on the cabinet beside a warning sign, which most likely represents Kaaatie’s profile picture.

“Alright, settle down now!” smirks while tapping her compass “We’re not here to waste time, are we? Failers beware—this isn’t a place for slacking. Do your best… or else, hm? Let’s keep things sharp, just like my compass here. Now, let’s focus.”