Miss Circle is one of the main antagonists of Basics in Behavior, where she makes her debut, and most likely the rest of the Fundamental Paper Education series. She is a teacher at Paper School, who kills students who fail or misbehave in class.

Lana is implied to not have been the smartest, having a hard time understanding the material. Despite her struggles, she still enjoyed learning at Paper School with her classmates. Especially Abbie; who likes her, Abbie had trouble when it came to academics. Lana appeared to be semi-pale grey-skinned with long grey hair that was tied up in a ponytail, with a curved cowlick. She wore sock puppets on both of her arms, both of which had googly eyes on them. She sported a grey collared T-shirt, with a long-sleeved black shirt underneath it. She also wore dark-grey pants with black hens. Notably, her pants had a few stitches around her knee and hip dips. Her attire is finished with black shoes.

Shin Sonic, or Shinic, as some call him, is a character created by Evanimas in 2020. His only goal is to evolve and havoc on the surrounding world. He is an unhinged primal being, that once resembled a malnourished, incomplete Sonic but eventually turned into a beast after gaining a newfound craving for the flesh of any living creature, starting with small animals before moving on to Humans and other Mobians.