Oliver's alternate appearance is similar to his paper self. He has ankle-length blonde hair tied into a bottom ponytail with a black bow with a large split ahoge atop his head. A bandage is on his left knee, and he sports a black headband with two small horns on it.

His outfit consists of a black collared shirt with white stripes on the sleeves and bottom, along with a rhombus with a slash in the center of his shirt. His attire is finished with white knee-high socks, accompanied by black boots and deep teal jean shorts. He also accessories a black band on his right arm. 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 let someone die.

He also appears to be madly in love with ∆lice, despite her violent, cannibalistic, cruel actions and even joins in on her.[1] Oliver also appears to be rather violent and has little to no care for his health, as he eats non-edible things, some of which are harmful to him, such as razor blades and soap.[2]

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 Connor in an official artwork.[3]

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