Mary Shannon is the series' central character, an Albuquerque-based Deputy United States Marshal assigned to WITSEC. She protects witnesses while trying to balance the demands of that job, her professional partnership with Marshall Mann, and a problematic personal life.
Mike's estranged wife who reconnects with him via video chat during his ordeal. They reconcile after he claims to have survived a nightmare. Initially skeptical, she ultimately accepts his truth upon hearing her deceased daughter's voice on his damaged recorder.
Mother appears as a malevolent entity impersonating Polly's mother. It tells Polly that she will die unless she offers the box something she hates, needs, and loves, and uses the threat to drive Polly into increasingly violent sacrifices while retaliating when she seeks help.
Alison Stern is Howard's longtime girlfriend and wife, supporting him through his early radio career and repeated professional moves. She briefly leaves after suspecting him of infidelity, then forgives him. Their miscarriage deeply affects her, and she later gives birth to a daughter while Howard is performing at an AC/DC concert.
Brad's wife who returns home covered in dust after the LA blasts. Despite quarantine efforts, she breaks a window, inadvertently introducing the virus into their sealed house. She communicates with Brad through the door, briefly leaves with Rick, and is later detained by soldiers. She survives but remains in severe shock at the film's end.
Neil's wife who is secretly having an affair with another man. Imir follows her to capture incriminating photos and later uses this information as leverage during his confrontation with Neil.
One of the women in the bachelorette party who joins the group to confront Peter. She is motivated by his past sexual harassment of her daughter, a crime that was previously ignored by authorities.
A WWE executive who briefs the gang about the Ghost Bear's recent terrorizing of WWE City and receives their report on the cave discovery.
Debra is Veronica's mother. After Veronica and Bailey return home, Debra admits that she is confused by Veronica's decision to have an abortion but clearly reiterates her love for her daughter. Her response gives Veronica emotional support while acknowledging the difficulty of accepting a choice she does not fully understand.
Amanda is Bruce Edwards’s wife and Ellie’s stepmother. She explains that Bruce is dying and later helps prepare for his memorial, giving Ellie practical information about her father’s final circumstances and connecting her to the difficult remains of the family life she left behind.
Sarah Schwab is a federal official who recognizes the broader financial danger posed by the cyberattack. She warns that the breach could trigger a run on banks and eventually cause public panic, helping frame the crisis as more than a technical systems failure. Her warning contributes to the officials’ debate over how urgently and comprehensively the government must respond.
Rebecca works for A.R.I.S.T., a private company operating under contract with the NSA, and recruits Alex for the dangerous decryption assignment. She offers him a large payment in exchange for a non-disclosure agreement, making her the initial link between Alex and the organization whose project later causes his illness and surveillance.
Mary McCormack has 60 screen credits in a career dating back to 1990. Their work is anchored in the An American Girl Collection universe with 1 titles. Signature works include In Plain Sight, 1408, K-PAX. Explore the interactive character relationship maps on each title page to trace how their roles connect across franchises.
