Aerius is a strikingly handsome, ethereal young man who materializes under mysterious circumstances. He possesses wavy chestnut hair, a muscular build, and a naive understanding of the human world. Held captive in a cramped attic, he absorbs the frustrations of his creators, which manifests as an uncontrollable compulsion toward violence whenever he hears a specific name. He struggles to interpret human language, often taking metaphors and sarcasm literally.

Samantha is a former Warren University MFA student and a newly successful novelist. Her debut book details the bizarre and disturbing actions of her graduate school classmates, prompting them to abduct her during her book tour. She is intelligent and observant, maintaining silence while her captors take turns presenting their version of the past academic year.

Coraline is a wealthy fiction student from Virginia who maintains a hyper-feminine, poised aesthetic to mask her deep insecurities. She prefers melodramas and strict propriety but secretly carries a razor blade, hinting at inner turmoil. Her intense devastation over a professor's standard critique catalyzes the cohort's collective resentment and drives their strange rituals.

Kyra is a fiction student with a dainty aesthetic heavily influenced by fairy tales and the Gothic. Her apartment features an attic space where the cohort conducts their secret activities. Despite her delicate appearance, she holds the highest tolerance for violence among her friends and frequently voices suspicion toward the beings they manifest.

Viktoria is a self-proclaimed shock artist who believes true creativity requires a forceful, physical impact. She stands out from her peers with unbrushed hair and grungy plaid clothing, rejecting their polished femininity. She approaches art and life with crass assertiveness, displaying unabashed and aggressive desires toward the subjects of the cohort's fixation.

Elsinore is the unofficial leader of the fiction cohort, possessing tall, silver-haired beauty and sharp charisma. She writes experimental prose on shards of glass and claims to have innate magical abilities. Vain and psychologically astute, she easily manipulates her peers, typically making the final decisions for the group and guiding their strange creative endeavors.

Ursula is a well-known novelist and professor with an ethereal, witch-like aura that invites immediate trust and intimacy. She teaches a model of writing based on tapping into deep psychological wounds. While she projects confidence, she privately fears her declining creativity and aging, driving her to aggressively covet new sources of inspiration for her own career.

Allan is a Scottish writing professor at Warren University who has published works in the horror genre. He provides standard, rigorous critiques that his female students interpret as harsh and unfair personal attacks. He remains calm, measured, and genuinely interested in helping his students find their narrative agency, despite their intense hatred of him.

Jonah is a student in the poetry stream of the MFA cohort at Warren University. Unlike his more belligerent peers, he is gentle, quiet, and friendly. He harbors a crush on his classmate Samantha and eventually forms a complicated bond with Aerius, offering the strange young man his first experience of genuine affection.

Tyler is a college student who crosses paths with Aerius during a chaotic Halloween party. His choice to dress as the author Edgar Allan Poe inadvertently triggers a dangerous misunderstanding, as the specific wording of his costume sets off deep-seated compulsions.

Leonard Coel, sometimes known as "the Immortal," is a celebrated poet who visits the university. He possesses enough artistic intuition to recognize authenticity, though his fondness for literary wordplay places him in unexpected danger during an evening on the town.

Fyorg is one of the later creations manifested by the Bunnies in their attempts to replace Aerius. Unlike the previous hybrids who remain entirely docile and lack individual will, he displays unusual awareness and helps guide his creators during their frantic search.

Ava is Samantha's best friend from the period before the Bunnies intervened in Samantha's life. Her deep bond provides stability until the strange dynamics of the writing cohort begin to alter their connection.

Max is a dangerous hybrid created by Samantha during her time in the MFA program. He becomes a subject of intense fascination for the rest of the cohort, reflecting the group's collective obsession with possessing male love objects.