Benjamin is a sixteen-year-old transgender boy attempting to escape the religious doomsday cult known as the Angels. His mother volunteered him to be infected with a specialized strain of the Flood virus, which is slowly rotting his body and transforming him into a monstrous savior called Seraph. Seeking refuge at the Acheson LGBTQ+ Center, he tries to retain his humanity and protect his new community.

Nicholas is a teenage boy on the autism spectrum who serves as the unofficial social leader of the Watch, a group defending the Acheson LGBTQ+ Center. He is pragmatic, relies on masking to manage social interactions, and uses bead lizards to self-soothe. He initially views Benjamin's transformation strictly as a tactical advantage against the cult rather than seeing him as a person.

Theodore is a devoted member of the Angels and Benjamin's former fiancé. After failing a previous assignment, he was demoted from the death squad and is desperate to prove his loyalty to the church. He harbors a toxic, possessive attachment to Benjamin and refuses to acknowledge his autonomy.

Benjamin's mother is a devout and ruthless follower of the Angels who prioritizes the cult's apocalyptic mission over her child's wellbeing. She actively rejects Benjamin's transgender identity, insists on using his deadname, and forced him to become the host for the Seraph virus.

Sister Kipling is the scientist responsible for engineering the Flood virus, which the Angels used to cull humanity. She also designed the experimental program that infected Benjamin, intending to create the perfect biological weapon for the cult's crusade.

Salvador is a teenager living at the youth shelter who uses xe/xyr pronouns. Xe is the first transgender person Benjamin meets after escaping New Nazareth, providing him with an immediate sense of comfort, validation, and belonging.

Erin is a transgender girl and an unofficial leader at the Acheson LGBTQ+ Center. She helps integrate Benjamin by giving him a tour of the facility and acts as a moral compass for the group, occasionally questioning Nicholas's more ruthless tactical decisions.

Cormac is a red-haired member of the Watch who frequently handles the gruesome task of collecting Angel ears to trade for essential supplies. He is highly suspicious of Benjamin's presence and openly complains about having to work alongside someone infected with the cult's virus.

Aisha is a skilled sniper and dedicated member of the Watch. She provides critical cover fire during skirmishes and works to keep the perimeter of the Acheson LGBTQ+ Center secure from hostile forces.

Faith is a resident of the Acheson LGBTQ+ Center who wears distinctive cross earrings. She is openly uncertain about her religious beliefs, providing Benjamin with a safe space to discuss his own complicated relationship with God.

Brother Hutch is a lethal member of the Angels' death squad, tasked with hunting down nonbelievers and returning runaways to the cult. He mercilessly murders Benjamin's father during their escape attempt.

Brother Collins is an enforcer for the Angels' death squad. He assists in tracking down Benjamin and uses physical threats to force compliance.

Trevor is a teenage boy from the Acheson LGBTQ+ Center whose tragic death by a Grace shakes the community. His passing introduces Benjamin to how openly the survivors express grief, directly contrasting the cult's teachings.

Alex is a grieving resident of the Acheson LGBTQ+ Center. Overwhelmed by the sudden loss of their partner, they physically lash out at Benjamin during the funeral, blaming him for bringing danger to their home.

Benjamin's father is the only adult in New Nazareth who fully accepted his son's gender identity. He tries to help Benjamin flee the cult's territory but is mercilessly gunned down by the death squad, leaving Benjamin to survive alone.