| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Danny Cannon | Crew | Directing | Director | 1 |
 Dermott Downs | Crew | Directing | Director | 4 |
 Eagle Egilsson | Crew | Directing | Director | 1 |
 Félix Enríquez Alcalá | Crew | Directing | Director | 1 |
 Greg Berlanti | Crew | Production | Executive Producer, Writer, Creator | 22 |
Guy Norman Bee | Crew | Directing | Director | 1 |
 Jace Alexander | Crew | Directing | Director | 1 |
 John Behring | Crew | Directing | Director | 1 |
 Julie Plec | Crew | Creator | Creator | |
 Leigh Dana Jackson | Crew | Writing | Writer | 3 |
Leslie Libman | Crew | Directing | Director | 1 |
 Michael Schultz | Crew | Directing | Director | 1 |
Nathan Hope | Crew | Directing | Director | 1 |
Nicholas Wootton | Crew | Writing | Writer | 3 |
Nick Copus | Crew | Directing | Director | 1 |
 Oz Scott | Crew | Directing | Director | 1 |
 Phil Klemmer | Crew | Production | Executive Producer, Writer, Creator | 22 |
Rob Bailey | Crew | Directing | Director | 1 |
Roger Damon Price | Crew | Writing | Original Series Creator | 22 |
 Wendey Stanzler | Crew | Directing | Director | 1 |
Armen V. Kevorkian | Crew | Visual Effects | Visual Effects Supervisor | 22 |
Micah Schraft | Crew | Writing | Writer | 4 |
Ray Utarnachitt | Crew | Writing | Writer | 3 |
Chris Bishop | Crew | Writing | Writer | 1 |
Grainne Godfree | Crew | Writing | Writer | 2 |
Steven A. Adelson | Crew | Directing | Director | 1 |
 Jeff Rake | Crew | Production | Co-Executive Producer, Writer | 22 |
 Jeff Cassidy | Crew | Camera | First Assistant Camera | 22 |
Alex Katsnelson | Crew | Writing | Writer | 3 |
 Al Sapienza | Cast | Actor | Dennis Coburn | 1 |
 Alexa PenaVega | Cast | Actress | Hilary Cole | 8 |
 Andrew Wheeler | Cast | Actor | Judge Fairbanks | 1 |
 Ben Cotton | Cast | Actor | Rapist | 1 |
 Bryce Hodgson | Cast | Actor | Simon | 1 |
 Byron Lawson | Cast | Actor | Kill Squad Leader | 1 |
 Carly Pope | Cast | Actress | Morgan Burke | 6 |
 Carter MacIntyre | Cast | Actor | Vaughn | 1 |
 Dalias Blake | Cast | Actor | Agent Peterson | 1 |
 Daniel Boileau | Cast | Actor | Barry | 1 |
 Darren E. Scott | Cast | Actor | Businessman | 1 |
 Darryl Quon | Cast | Actor | Thug | 1 |
 Deni DeLory | Cast | Actress | Margaret Hightower | 1 |
 Derrick Simmons | Cast | Actor | Guard #3 | 1 |
 Doron Bell | Cast | Actor | Security Guard #1 | 1 |
 Doug Abrahams | Cast | Actor | Sheriff | 1 |
 Doug Chapman | Cast | Actor | Man | 1 |
 Elizabeth Hurley | Cast | Actress | A.L.I.C.E. (voice) | 2 |
 Fulvio Cecere | Cast | Actor | Tony | 1 |
 Haig Sutherland | Cast | Actor | Jonah | 1 |
 Hiro Kanagawa | Cast | Actor | Corbin | 1 |
 Howard Siegel | Cast | Actor | Man | 1 |
 Ingrid Torrance | Cast | Actress | Mrs. Rundle | 1 |
 Jason Dohring | Cast | Actor | Killian McCrane | 1 |
 Jeffrey Pierce | Cast | Actor | Jack Jameson / Roger Price | 14 |
 Kurt Evans | Cast | Actor | Agent Veras | 1 |
 Kwesi Ameyaw | Cast | Actor | Head of Security | 1 |
 Mark Pellegrino | Cast | Actor | Dr. Jedikiah Price | 22 |
 Meta Golding | Cast | Actress | Darcy Nichols | 5 |
 Michael Hogan | Cast | Actor | Senator Kelsey | 2 |
 Michasha Armstrong | Cast | Actor | Ultra Instructor | 2 |
 Nels Lennarson | Cast | Actor | Federal Marshall | 1 |
 Nicholas Carella | Cast | Actor | Harold | 1 |
 Nicholas Young | Cast | Actor | Professor Aldus Crick | 1 |
 Peyton List | Cast | Actress | Cara Coburn | 22 |
 Reese Alexander | Cast | Actor | Henry Finch | 1 |
 Robert Gant | Cast | Actor | Peter MacKenzie | 2 |
 Roberto Lopez | Cast | Actor | Guard #1 | 1 |
 Sarah Clarke | Cast | Actress | Marla Jameson | 11 |
 Shaine Jones | Cast | Actor | Highway Patrolman #1 | 1 |
 Shawn Roberts | Cast | Actor | Ultra Agent | 1 |
 Shaker Paleja | Cast | Actor | Head Tech | 1 |
 Simon Merrells | Cast | Actor | Hugh Bathory / The Founder | 10 |
 Sylvesta Stuart | Cast | Actor | Kill Squad #2 | 1 |
 Travis MacDonald | Cast | Actor | Miggs | 1 |
 Ty Olsson | Cast | Actor | Errol | 1 |
 Victor Pagan | Cast | Actor | Homeless Man | 1 |
 Aaron Yoo | Cast | Actor | Russell Kwon | 22 |
Adrian Hein | Cast | Actor | Ultra Guard #5 | 1 |
 Andrew Stewart-Jones | Cast | Actor | Damian | 1 |
 Artine Brown | Cast | Actor | Bouncer | 1 |
 Chris Shields | Cast | Actor | Ultra Doctor | 1 |
 Cindy Busby | Cast | Actress | Med Tech | 1 |
 Clyde Baldo | Cast | Actor | Teacher | 1 |
 Connor Dunn | Cast | Actor | Young Killian | 1 |
 David Bloom | Cast | Actor | Dr. Lehrman | 1 |
Derek Morrison | Cast | Actor | Scary Boss | 1 |
 Elise Gatien | Cast | Actress | Sophie Coburn | 1 |
 Leah Cairns | Cast | Actress | Lucy | 1 |
 Lee Tichon | Cast | Actor | Police Officer | 1 |
 Leven Rambin | Cast | Actress | Natalie | 3 |
 Luke Mitchell | Cast | Actor | John Young | 22 |
 Luvia Petersen | Cast | Actress | Ursa | 1 |
 Mathew Yanagiya | Cast | Actor | Young Agent #1 | 1 |
 Monique Ganderton | Cast | Actress | Nelly | 1 |
 Patrick Sabongui | Cast | Actor | Andrew | 1 |
 Paul Lazenby | Cast | Actor | Ultra Guard | 1 |
 Robbie Amell | Cast | Actor | Stephen Jameson | 22 |
 Serinda Swan | Cast | Actress | Cassandra Smythe | 2 |
 Toby Levins | Cast | Actor | Commander | 1 |
Vicky Huang | Cast | Actress | Ultra Trainee | 1 |
 Víctor Ayala | Cast | Actor | Nice Hipster | 1 |
 Aeriél Miranda | Cast | Actress | Piper Nichols | 1 |
 Alison Wandzura | Cast | Actress | Ultra Agent #2 | 1 |
 Benjamin Hollingsworth | Cast | Actor | Agent Troy | 2 |
 Burkely Duffield | Cast | Actor | Tyler Miller | 1 |
 Cali Fredrichs | Cast | Emily Hightower | 1 | |
 Christian Sloan | Cast | Actor | Telepath | 1 |
 Giles Panton | Cast | Actor | Ultra Agent #2 | 1 |
 Jacob Kogan | Cast | Actor | Luca Jameson | 12 |
Jaden Rain | Cast | Actor | Foster Child | 1 |
 James Landry Hébert | Cast | Actor | Nathan / Cyrus | 1 |
 James Yi | Cast | Actor | Russell's Father | 1 |
 Laura Slade Wiggins | Cast | Actress | Irene Quinn | 5 |
 Mark Tallman | Cast | Actor | Burly Guy | 1 |
 Nathan Mitchell | Cast | Actor | Ultra Agent #1 | 1 |
 Nick Eversman | Cast | Actor | Kurt Rundle | 2 |
 Reilly Dolman | Cast | Actor | Man under Mask | 1 |
 Roy Jackson | Cast | Actor | Security Guard | 1 |
 Samuel Smith | Cast | Actor | Robber | 1 |
 William 'Big Sleeps' Stewart | Cast | Actor | Clint | 1 |
 Yuki Morita | Cast | Actress | Eliza | 1 |
 Adam Boys | Cast | Actor | Deputy | 1 |
 Anthony Konechny | Cast | Actor | Agent Perkins | 1 |
 Bernadette Beck | Cast | Actress | Teller | 1 |
 Chelsey Reist | Cast | Actress | Krysten | 1 |
 Corey Pierno | Cast | Actor | Guard #2 | 1 |
 Dalila Bela | Cast | Actress | Cara's Sister | 1 |
 Darla Taylor | Cast | Actress | Hottie | 1 |
 Dejan Loyola | Cast | Actor | Ray | 2 |
 Dylan Kingwell | Cast | Actor | Young Stephen | 1 |
 Emily Fonda | Cast | Actress | Trixie | 1 |
 James Mackay | Cast | Actor | Julian Masters | 2 |
 Jarod Joseph | Cast | Actor | Juergens | 1 |
Jessa Danielson | Cast | Smoking Hottie | 1 | |
 Mitchell Kummen | Cast | Actor | Young John | 3 |
 Nik Markovina | Cast | Actor | Bartender | 1 |
 Nnamdi Nwosa | Cast | Actor | Lead Agent | 1 |
 Shamier Anderson | Cast | Actor | Mike | 1 |
 Sophie Lui | Cast | Actress | Newscaster #1 | 1 |
 Tim Zhang | Cast | Actor | Geeky Boy | 1 |
 William Vaughan | Cast | Actor | Ultra Agent | 1 |
 Aiden Longworth | Cast | Actor | Subway Kid | 1 |
 Dagan Nish | Cast | Actor | Bryce | 1 |
Jared Ager-Foster | Cast | Actor | Young Jedikiah | 1 |
Levi Hildebrand | Cast | 1st Time Drunk Boy | 1 | |
 Lyndon Smith | Cast | Actress | Mallory | 1 |
 Madeleine Arthur | Cast | Actress | Charlotte Taylor | 4 |
 Madeleine Mantock | Cast | Actress | Astrid | 22 |
 Melissa Roxburgh | Cast | Actress | Talia | 1 |
 Riun Garner | Cast | Actor | Test Subject | 1 |
Amanda Clarke | Cast | Alexis Pixel | 0 | |
 Chloe Babcook | Cast | Actress | Jenny | 1 |
 Don McLeod | Cast | Actor | MTA Worker | 1 |
 Michael Meneer | Cast | Actor | Newscaster #2 | 1 |
Rebecca James | Cast | Actress | Homeless Girl | 1 |
Rob Compton | Cast | Soldier | 1 | |
 Darren Mann | Cast | Actor | Stoner | 1 |
 Trish Allen | Cast | Actress | Nurse | 1 |
 Elisabeth Rosen | Cast | Actress | Ultra Agent | 1 |
 Ryan Beil | Cast | Actor | Avery | 1 |
 Chad Bellamy | Cast | Actor | Kill Squad Leader | 1 |
 Sean Mahaffey | Cast | Actor | Rory | 1 |
 Max Chadburn | Cast | Actress | Pauline | 1 |
 Jason Griffith | Cast | Actor | Security Guard | 1 |
 Mathias Retamal | Cast | Actor | Mark Menendez | 1 |
 Eva Day | Cast | Actress | Mandy | 1 |
 Artin John | Cast | Actor | Control Subject | 1 |
 Raresh DiMofte | Cast | Actor | Sasha | 1 |
 Michael Jonsson | Cast | Actor | Kyle | 1 |
 Christopher Pearce | Cast | Actor | Bouncer | 1 |
 Jaeson Lee | Cast | Actor | Kill Squader | 1 |
 Wesley Taylor | Cast | Actor | Monty the Magnificent | 1 |
 Raphael Kepinski | Cast | Actor | Alexei | 1 |
Radek Hewson | Cast | Young Roger | 1 | |
 Thomas Cadrot | Cast | Actor | Ultra Agent #1 | 1 |
Heidi Ford | Cast | Female Ultra Analyst | 1 | |
 Allison Thomas Lee | Cast | Mrs. D'Amico | 1 | |
 Vaughn Clements | Cast | Actor | Security Guard | 1 |
 Jordan Connor | Cast | Actor | David | 1 |
Aaron Hance | Cast | Young Stephen | 1 | |
Nolan Janssens | Cast | Jock | 1 | |
Aaron Reno | Cast | Dustin | 1 | |
Phillip David Lee | Cast | Van | 1 | |
Angelique Jensen | Cast | Female Tech | 1 | |
Miles Tyler Roberts | Cast | Telepath #3 | 1 | |
Synthia Yusuf | Cast | Actress | Ultra Techie | 1 |
Zach Martin | Cast | Actor | Police Officer | 1 |
Michelle Simick | Cast | Reporter | 1 | |
 Don Lew | Cast | Actor | Ling | 1 |
Brenda Lee Campbell | Cast | Scared Woman | 1 | |
Jenna Burgess | Cast | Actress | Judge's Daughter | 1 |
Julian Vess | Cast | Jody | 1 | |
Emmanuel Bempong | Cast | Actor | Shy Kid | 1 |
 Natasha Gayle | Cast | Actress | Sandy | 1 |
 Joe Costa | Cast | Actor | Dealer | 1 |
 Ryleigh Gillespie | Cast | Actress | Cheerleader | 1 |
 Derek Klena | Cast | Actor | Dylan | 1 |
 Susan Hanson | Cast | Actress | Russell's Mother | 1 |
Terry Mullett | Cast | Telepath #2 | 1 | |
 Sean Baden | Cast | Security Guard | 1 | |
 Russell Porter | Cast | Actor | Coach Tanner | 1 |
| Person | Type | Job | Role(s) | Episodes |
