Main •
Katja Herbers as Dr. Kristen Bouchard, a
forensic psychologist who made a career as an
expert witness, and is offered a new job as assessor by David. Kristen was raised Catholic and is an agnostic who does not believe in demons or the supernatural. She finds her skepticism tested many times as her new job leads her to walk a thin line between the unexplained and what science can account for. •
Mike Colter as David Acosta, a Catholic
priest and former war journalist who struggled with addictions. He is an assessor, tasked with investigating and confirming events such as miracles and reports of demons, leading him to enlist the help of Kristen and Ben. A believer in the existence of both godly and demonic events, he has divine-like visions, which he achieves by taking
hallucinogens, and is more inclined than the other two assessors to accept supernatural explanations. In season 2, he completes his training and becomes a priest. •
Aasif Mandvi as Ben Shakir, an atheist raised in the religion of
Islam who is the team's technical expert and equipment handler. A sarcastic, pragmatic man who looks down on religious institutions and belief in the supernatural, he tries to provide scientific explanations for the events the trio investigates. •
Kurt Fuller as Dr. Kurt Boggs, a
psychiatrist and Kristen's therapist who gradually finds himself involved in some of Kristen's encounters with the supernatural. • Marti Matulis as many of the creatures featured in the series, including the following recurring characters: • George, a
demon who appears in Kristen's dreams, voiced by an uncredited
Euan Morton • The "Devil Therapist" (seasons 1–2), a goat-like demon who is Leland Townsend's therapist, voiced by an uncredited
Michael Cerveris • The "Manager Demon" (seasons 3–4), a five-eyed goat-like demon who is Sheryl's work supervisor, voiced by an uncredited
Kevin Chapman •
Brooklyn Shuck as Lynn Bouchard, Kristen's eldest daughter • Skylar Gray as Lila Bouchard, Kristen's second eldest daughter • Maddy Crocco as Lexis Bouchard, Kristen's third eldest daughter • Dalya Knapp as Laura Bouchard, Kristen's fourth and youngest daughter •
Christine Lahti as Sheryl Luria, Kristen's mother. She is originally supportive of Kristen, but the two grow apart after she enters a relationship with Leland Townsend, who leads Sheryl to become increasingly involved with the demonic. •
Michael Emerson as Dr. Leland Townsend, a forensic psychologist who is Kristen's professional rival and who seems obsessed with her family. Under his meek, polite behavior, he is a psychopath and devil worshipper who commits horrible acts and encourages others to do the same to spread more evil in the world. He looks down on religion and holds particular contempt for David and Sister Andrea. Although he hates being reminded of his origins, he was originally Jake Perry, an insurance adjuster in
Des Moines. • Ashley Edner as Abbey (season 2; guest season 3), a
succubus that taunts Ben during his dreams •
Ciara Renée voices Abbey in a recurring role •
Andrea Martin as Sister Andrea (seasons 3–4; recurring season 2), a smart, no-nonsense nun, who advises David and opposes Townsend. Sr. Andrea is Sister of Mercy and a devout Roman Catholic. Unlike most humans, she is capable of seeing demons when they walk the living world, and fervently faces them and the humans who worship them, notably Townsend, who immediately comes to hate her.
Recurring • Darren Pettie as Orson LeRoux (seasons 1–2), a convicted serial killer who is evaluated by Kristen •
Brooke Bloom as Emily LeRoux (seasons 1, 3), Orson LeRoux's wife •
Danny Burstein as Lewis Cormier (seasons 1, 4), Kristen's former boss and the
D.A. of
Queens, New York City •
Boris McGiver as
Monsignor Matthew Korecki, a distinguished priest who Kristen, David and Ben receive and report their cases to. Although the character dies in the penultimate episode of season three, Korecki makes a voice appearance in the season four episode "How to Build a Chatbot" as an
artificial intelligence emulating Korecki. • Sohina Sidhu as Karima Shakir, Ben's sister and a tech expert •
Clark Johnson as Father Amara (season 1), an
exorcist and David's spiritual advisor •
Noah Robbins as Sebastian Lewin (season 1), a young man targeted by Leland Townsend • Nora Murphy as Rose390 (season 1), a young girl
avatar in a video game whose creator attacks David • Nicole Shalhoub as Vanessa Dudley (seasons 1–2), one of the co-hosts of the ghost-themed
reality show "Gotham Ghosts" and Ben's on-again/off-again girlfriend •
Li Jun Li as Grace Ling (seasons 1–3), a supposed doomsday prophet under investigation by The Catholic Church •
Kristen Connolly as Detective Mira Byrd (seasons 1–2), a
homicide detective in the
NYPD and Kristen's friend •
Patrick Brammall as Andy Bouchard, Kristen's husband, father of their daughters and a professional
climbing guide who is often away from the family •
Peter Scolari as Bishop Thomas Marx (seasons 1–2), a skeptical Catholic Church official who assigns David's cases prior to his
ordination. His appearances in Season 2 were some of Scolari's final performances before his death in 2021. •
Renée Elise Goldsberry as Renée Harris (seasons 1–2), a
defense attorney working for the Catholic Church •
Taylor Louderman as Malindaz (seasons 1–3), a popular
YouTube beauty
vlogger who is one of Townsend's clients •
Brian Stokes Mitchell as Father Joe Mulvehill (seasons 2, 4), a spiritually exhausted exorcist suffering from a crisis of faith • Stephen Dexter as "Fry Guy" (seasons 2–3), a man that Kristen assaults after he was repeatedly rude to her, leading to the creation of a
viral video •
Brian d'Arcy James as Victor LeConte (seasons 2–4), an agent of The Entity, the Vatican secret service •
Anthony DeSando as Father Rodrigo Katagas (seasons 2–4), a high-ranking member of
The Congregatio pro Doctrina Fidei aka The Holy Office •
Tim Matheson as Edward Tragoren (seasons 2–3), a sinister business consultant and friend of Townsend who romances Sheryl •
Wallace Shawn as Father Frank Ignatius (seasons 3–4), a dying priest who is miraculously brought back to life after the weighing of his soul, resulting in a more spontaneous and exuberant behavior. After the death of Monsignor Korecki, with whom he shared a close and almost intimate bond, he is appointed to replace him as supervisor of Kristen, David and Ben. •
Molly Brown as Leslie Ackhurst (seasons 3–4), the surrogate mother of Timothy, a child born from one of Kristen's previously harvested eggs •
Gia Crovatin as Renee (seasons 3–4), Ben's girlfriend and the leader of the Yeshua People cult •
Dana Gourrier as Yasmine Thomas (seasons 3–4), Kristen's attorney and friend •
Chukwudi Iwuji as Father Dominic Kabiru (season 4), a senior agent of The Entity, the Vatican secret service • Fedor Steer as various creatures (season 4), including the "Massive Stick Demon", a "Great Evil Coming to New York" alluded to in previous seasons •
John Carroll Lynch as Henry Stick (season 4), a Human disguise taken by the Stick Demon to pose as a clumsy and unassuming lawyer who acts as Leland's legal counsel
Guest •
Dakin Matthews as Father Augustus ("177 Minutes") •
Sanjit De Silva as Neil Benton, a hospital owner ("177 Minutes") •
Hannah Hodson as Naomi Clark, a girl who was revived seconds after her autopsy had begun ("177 Minutes") •
John Glover as Byron Duke, a Broadway producer who supposedly sold his soul to a demon ("3 Stars") •
Dascha Polanco as Patti Hitchens, Duke's assistant ("3 Stars") • Luke Judy as Eric McCrystal, a boy suspected to be possessed by a demon ("Rose390") •
Michael Stahl-David as Tom McCrystal, Eric's dad ("Rose390") •
Heather Lind as Sara McCrystal, Eric's mom ("Rose390" & "O Is for Ovaphobia") •
Karen Pittman as Caroline Hopkins, a woman on whom the Catholic Church performs an exorcism ("October 31" & "Exorcism Part 2") •
Timothy D. Stickney as William Hopkins, Caroline's husband ("October 31") •
Matilda Lawler as • Brenda, a mysterious girl in a mask ("October 31") • Mathilda Mowbray, a girl who, according to her adoptive parents, has pyrokinesis. ("F Is for Fire") • Chris Ghaffari as Tony Pacuci, one of the co-hosts on the show "Gotham Ghosts", alongside Vanessa Dudley ("October 31" & "2 Fathers") •
Nelson Lee as Daniel Ling, Grace's brother ("Let x = 9") •
Rocco Sisto, Pedro Carmo and Anthony Alessandro as Silvio, Vincent and Mateo, experts from the Vatican ("Let x = 9") •
Annaleigh Ashford as Bridget Farrell, a woman who claimed to have killed a young boy while being possessed by a demon ("Let x = 9") • Dan Bittner as Dwight Ferrell, Bridget's Husband ("Let x = 9" & "Justice x 2") •
Vondie Curtis-Hall as Leon Acosta, David's father ("2 Fathers") •
Jennifer Ferrin as Judith Lemonhead, Caroline's lawyer ("Exorcism Part 2") •
Jeremy Shamos as Phillip Lynch-Giles, Caroline's psychiatrist ("Exorcism Part 2") •
Megan Ketch as Judy James, a former associate of David and Ben ("Room 320") •
Tara Summers as Linda Bloch, a nurse and secret angel of death ("Room 320" & "How To Slaughter a Pig") • Marcus Callender as Harlan Zephyrs, a hospital patient, who was being targeted by Linda Bloch ("Room 320") •
Gbenga Akinnagbe as Lando Mutabazi, a comedian ("Justice x 2 ") •
Emayatzy Corinealdi as Sona Kamanzi, a woman who pursued Lando ("Justice x 2 ") •
Jayne Houdyshell as Judge Sarah Carla Shire ("Justice x 2 ") • Laura Heisler as Eleanor Chakiris, a woman who claims to be pregnant with a possessed child ("Book 27 ") •
Patrick Page as Father Luke ("Book 27 " & "The Demon of Cults") •
Dylan Baker as Father Kay, one of David's teachers at the Catholic Church ("A Is for Angel" & "E Is for Elevator") •
Jessie Mueller as Anya, a
homicide detective in the
NYPD ("A Is for Angel" & "C Is for Cop") •
Brandon J. Dirden as Raymond Strand, a man who claims to be talking to an angel ("A Is for Angel") •
Joniece Abbott-Pratt as Ashley Strand, Raymond's wife ("A Is for Angel") •
Ben Rappaport as Brian Castle, Mathilda's adoptive dad ("F Is for Fire") •
Zuleikha Robinson as Jane Castle, Mathilda's adoptive mom ("F Is for Fire") • Sevan as Sheikh Majed ("F Is for Fire") • Patrice Johnson Chevannes as Miss Marie, psychic readings ("Z Is for Zombies" & "O Is for Ovaphobia") •
Wayne Duvall as Louie Wolff, member of the police union ("C Is for Cop") •
Fredric Lehne as Mick Carr, director of the television series
Justice Served ("C Is for Cop") •
Corey Cott as Officer Jim Turley ("C Is for Cop") •
Alexandra Socha as Fenna, a sister of Sacred Trinity Monastery ("S Is for Silence" & "Fear of the End") •
Kenneth Tigar as Father Winston ("S Is for Silence") •
Michael Esper as Cal, a scientist ("B Is for Brain") •
Meera Simhan as Liyana Shakir, Ben's mother ("B Is for Brain") •
Francesca Faridany as Cara Autry, a doctor from the RSM Fertility ("O Is for Ovaphobia") •
Gus Halper as Graham Lucian ("I Is for IRS") • John Sanders as Bishop Jim Logger ("I Is for IRS") • Julienne Hanzelka Kim as Anita Iota, tax agent ("I Is for IRS") •
Reed Birney as Father Thunderland ("I Is for IRS") •
Ato Essandoh as Nathan Katsaris, a widower who claims his house is possessed by a demon ("D Is for Doll") • Michael Laurence as Gregory Beale, a layman who specializes in cleaning house of demonic entities ("D Is for Doll") •
Taylor Trensch as Mitch Otterbean, a student is obsessed with cannibalism ("C Is for Cannibal") •
Ruthie Ann Miles as Dr. Beverly Swan, a scientist conducting a soul scale experiment ("The Demon of Death") •
Kayli Carter and Freddy Miyares as Amalia and Leo, a married couple experiencing sexual problems ("The Demon of Sex") •
Lena Hall as Marie Taylor, a single mother claims she is demonically terrorizing her family with a viral social app ("The Demon of Algorithms") • Lilli Stein as Katie Schweiger, VidTap's tech ("The Demon of Algorithms" & "How to Train a Dog") •
Michael Chernus as Dr. Paul Wimsimer, a scientist who studies the influence of cults ("The Demon of Cults") •
Nate Mann as Henry Trezza, a guy who claims he is being stalked by a demon after investing in a stock tip ("The Demon of Money") •
Peter Mark Kendall as Dr. Ethan Parquet, a Head Research Director at particle accelerator ("How to Split an Atom") •
Carra Patterson as Emily Reinhardt, a scientist at particle accelerator ("How to Split an Atom") • Victor Cruz as Mateo Marcus, a worker at a particle accelerator facility ("How to Split an Atom") •
Jeremy Crutchley as Father Agostino La Russo ("How to Split an Atom") •
Tony Plana as Chet Garcia, farm owner ("How To Slaughter a Pig") •
Patrick Breen as Father Dement ("How to Build a Coffin" & "How to Fly an Airplane") •
Reg Rogers as Aiden Flowers, a parish lawyer ("How to Fly an Airplane" & "Fear of the Future") • Stella Everett as Isabella, a satanic dancer ("How to Dance in Three Easy Steps") • Isabella Briggs as Megan Tyree, a dance teacher cursed by Satanists ("How to Dance in Three Easy Steps") •
Jefferson White as Tyrus, a train driver who saw a ghost on the way ("How to Bandage a Wound") •
Sean Patrick Thomas as Tyler, a man who wanted to commit suicide ("How to Save a Life") • Rafi Silver as Myles Koppler, the head of the ethics department at LastConnection ("How to Build a Chatbot") •
Richard Kind as Judge Jared Jeter, the court judge overseeing Leland's trial ("Fear of the Future" & "Fear of the Other") •
Anna Chlumsky as Ellie, a mysterious woman threatening Kristen's family ("Fear of the Future") •
Nate Corddry as Paul Stolee Jr., a man who believes his doppelganger has possessed him ("Fear of the Other") •
Paul Guilfoyle as Archbishop Kirby, a Catholic Church official who administers the deconsecration of David's church ("Fear of the Other" & "Fear of the Unholy") •
Denis O'Hare as Father Giovanni De Vita, a high-ranking member of the
Palatine Guard ("Fear of the Unholy" & "Fear of the End") • John Christopher Jones as Johann Taupin, a genius-level physicist with
ALS who is a wheelchair user. ("Fear of the Unholy") •
Christian Borle as Neil, Taupin's secretary and a demon disguised as a human ("Fear of the Unholy") == Episodes ==