List of characters from The Deluge by Stephen Markley

Mostly from the first quarter of the story, presented in the order of the year they were first introduced:
- 2013 - Anthony Pietrus ("Tony", climate scientist), Gail (Tony's wife, died from cancer), Holly ("Older one", their daughter), Catherine("Khaleesi", their 2nd daughter), Niko (Tony's lab partner), Corey (Tony's brother-in-law)
- 2014 - Shane Acosta (previously Alvarez), Kellan Harley Murdock ("Kel", veteran, EOD, Explosive Ordnance Disposal, "Kelter", "Skelter", "Docker", "Dick", "D", "Murder", and "Manfuck")
- 2014 - Jaquelyn Shipman ("Jackie", consumer marketing), The Actor (later "The Pastor"), Jefferey (Jackie's ex)
- 2015 - Keeper (teenager, addict), Claire Ann (Keeper's girlfriend)
- 2016 - Ashir al-Hasan (Ash, brilliant, neurodivergent mathematician and data modeler), Peter O'Connell (Ash's friend, financier), Rachel Franklin (Peter's girlfriend), Haniya (Ash's sister), Dr. Sri Thankankur and Dr. Tufariello (Ash's mentors)
- 2017 - Dr. Anthony Pietrus (author of One Last Chance), John Taylor Jr. (rightwing reporter)
- 2017 - Kate Morris (activist), Matt Stanton ("Tar Heel", Kate's boyfriend), Ghezi ("Snorkel", Matt's workmate), Captain Ray (Matt's manager), Damien (Matt's workmate), Luce (Kate's girlfriend)
- 2025 - 6Degrees (anti-pipeline eco-terrorist group), Moniza Farook (Vanity Fair writer)
- 2026 - Kate Morris ("Kate Chaos"), A Fierce Blue Fire (""FBF, Kate's org); Kate's partners in FBF: Liza Yudong (the innovator, Harvard computer scientist), Rekia Reynolds (veteran of Black Lives Matter), Tom Levine (a creature of the swamp), Coral Sloane (encyclopedic brain with tattoos), Matthew Stanton
- 2027 - Marty Rathbone (friend and partner of Tony Pietrus), Dean (Holly's boyfriend), Mary Randall (NY gov, "the Republican Party's resurrection, its woke rebirth after a decade of Trumpism"), Emii Li Song (an extraction industry lobbyist with Sustainable Future Coalition, SFC)
- 2028 - Senator Cy Fitzpatrick (wheelchair-bound Pennsylvania senator), Senator Russ Mackowski (rightwing, West Virginia), Climate X (FBF climate proposal: "All Climate X means is we treat the most important issue in the world like it's actually the most fucking important issue in the world."), Ashir al-Hasan (aid to Fitzpatrick)
- 2028 - 6degrees: Shane (With No Last Name), Jansi (the Second Cell), Allen ("The Handler"), Kel Murdock, Kai, Quinn (data scientist), Lali (Shane's daughter), Tinkerbell (asset in a national security consulting firm)
- 2029 - Seth Andrew Young (recovering political operative, now runs a running club, friend of Ash al-Hasan), Dr. Jane Rufariello (one of the most energetic scientists in her field, Earth systems modeling, Ash works for her)
- 2032 - Archana Bhattacharyya ("Archie", Fund manager)
Simon & Schuster, 2023; audiobook: Simon & Schuster Audio, 2023.

