Sadie is a 20-year-old indentured servant living in the shifter territory who unexpectedly tests as the first-ever female alpha. Subjected to years of physical and psychological abuse, she relies on a dissociative mental state she calls "the numb" to survive combat and trauma. Her small stature and heavily scarred body make her an anomaly among the massive male alphas, fueling her defiant drive to prove she belongs at the military fortress guarding portal three.

Jax is a 120-year-old, bear-shifting alpha and the calm, massive leader of the military unit assigned to portal three. Known by his alpha scent of warm chestnuts and his gold-adorned braids, he maintains order in the fortress and functions as a protective force for his soldiers. He attempts to manage the volatile behavior of his fellow alphas while figuring out how to handle the sudden appearance of a female alpha.

Cobra is a 100-year-old alpha who shifts into a mass of shadow snakes and carries a biting frost scent. He bears unique physical modifications, with emeralds and diamonds permanently embedded in his skin from his past imprisonment in the fae dimension. Openly hostile and harboring a deep, generalized hatred of women, he initially treats Sadie with extreme cruelty and suspicion.

Ascher is a 21-year-old, ram-shifting alpha marked by extensive flame and rose tattoos and a sharp pine scent. The heir to a massive illegal weapons syndicate, he presents himself as an arrogant, hotheaded warrior who is easily provoked. He directs intense mockery and misogyny toward Sadie, viewing her existence as a female alpha as a personal insult while struggling with uninvited attraction to her.

Dick is a retired beta soldier who operates a tavern in the shifter territory and holds absolute control over his indentured servants. He relies on systemic, physical violence to enforce his dominance and preserve his social standing over those he considers his property. His relentless cruelty shapes Sadie's survival instincts and instills in her a deep distrust of authority.

The Fae Queen is the powerful ruler of the fae dimension who commands the monstrous creatures emerging from the portals. Wielding a unique blue flame magic that operates outside the shifters' biological hierarchy, she poses a constant, looming threat to the military forces at portal three.

Aran is a lanky beta soldier with striking electric-blue hair who lives at the military compound. Demonstrating exceptional fighting skills and a keen understanding of the fortress's social dynamics, Aran provides Sadie with a reliable source of support and advice. Unlike the hyper-masculine alphas, Aran offers genuine camaraderie and helps Sadie adjust to her chaotic new life.

Zed is a null-class servant working at the remote military fortress. Lacking the physical strength or magical abilities of the ABO classes, he occupies the lowest tier of the compound's social structure. He treats Sadie with immediate respect and kindness, acting as an important guide to the facility's geography and hidden resources.

Lucinda is Sadie's younger sister, an orphan who was abandoned alongside her at the tavern. Sweet-natured and currently away at a mandatory boarding school, she serves as Sadie's primary motivation for fighting back against their abuser.

Darren is a bearded beta soldier at the military compound who holds traditional, misogynistic views about the shifter hierarchy. As a personal friend of Dick, he actively attempts to brutalize Sadie to prove that a woman cannot be a true alpha.

Auntie is an ancient beta instructor at the compound who teaches battle strategy and conducts mandatory psychological evaluations. She evaluates the soldiers' mental fitness for war against the fae creatures.

John is a beta soldier at the fortress who initially appears friendly toward Sadie. He participates in the compound's grueling training regimens and the chaotic battles against the fae portal breaches.

Sara is a blonde beta soldier stationed at the military fortress. She frequently seeks the attention of the male alphas and verbally harasses Sadie, viewing the female alpha as dead weight in their ranks.

Sora is a blonde beta soldier at the compound who closely follows her twin sister's lead. She is highly focused on gaining the sexual attention of the alpha commanders while attempting to undermine Sadie's confidence.

Mika is a masseuse employed at or visiting the compound to attend to the soldiers. He takes a liking to Sadie, offering her compliments and acting as a rare friendly presence among the hostile military personnel.