Oliver is a character featured in Fundamental Paper Education, and the central antagonist in Basics in Behavior. He is ∆lice's childhood friend and boyfriend.Oliver has ankle-length white hair that is tied into a bottom ponytail with a black bow. He has black horns and a red circled "A+" mark on the right side of his hair. He also has a large split ahoge atop his head. Additionally, his right arm is replaced with a pencil. Strangely, his tongue appears to be forked, similar to that of a snake. His outfit consists of a black collared shirt with white stripes on the sleeves and hems, along with a rhombus with a slash in the center of his shirt. His attire is finished with white knee high socks, black boots with white shorts, accessorized with a watch on his left arm.While mostly remaining the same, in recent artworks, Katie is shown to have sharp eyelashes on the corner of their eyes and a defined chest. Their ponytail also appears to be shorter. Notably, their teeth appear to be sharper.Like Zip and Edward, Oliver is described to be a bully to other students. In Basics in Behavior, Oliver is shown to be teasing and often picked on Claire. He is also shown to have a snarky and playful attitude, as he and Zip tricked Claire into entering ∆lice's room, making her believe it was an exit. Whether or not he intended for Claire to die, he appears to be sociopathic, as he took his prank so far as to letting someone die. He also appears to be madly in love with ∆lice, despite her violent, cannibalistic, cruel actions, and even joins in on her. [3] Oliver also appears to be rather violent and has little to no care for his own personal health, as he eats non-edible things, some of which are harmful to him, such as razor blades and soap.[4] Additionally, Oliver is implied to like drawing in his free time, as shown at the start of Basics in Behavior, where we can see multiple drawings of the other students and teachers in a notebook, such as Riley, Zip, ∆lice Miss Circle, and Oliver himself. Oliver also appears to be a bit arrogant, calling himself handsome in the same notebook. Furthermore, he is seen drawing with Conner in an official artwork.

Oliver:Sitting on his desk eating his soap not caring