All 83 actors in both Psych and The 100
83 actors have appeared in both Psych and The 100, across 219 episodes. The most-credited is Luisa d'Oliveira, Sissy in Psych and Emori in The 100.
| Actor | In Psych | In The 100 | Eps | Eps |
|---|---|---|---|---|
| Luisa d'Oliveira | Sissy | Emori | 1 | 44 |
| Ivana Miličević | Miss Ivana | Charmaine Diyoza | 1 | 23 |
| Chelsey Reist | Beautiful Woman, Trashy Girl | Harper McIntyre | 2 | 41 |
| Ty Olsson | Manetti | Nyko | 1 | 10 |
| Chris Shields | Minister | David Miller | 1 | 11 |
| Lee Majdoub | Neil | Nelson / Sachin | 1 | 10 |
| Toby Levins | Leonardo | Carl Emerson | 1 | 10 |
| Karen Holness | Lillian | Blythe Ann Workman | 1 | 10 |
| Tom Stevens | Chris | Trey | 1 | 8 |
| Aleks Paunovic | Bartender, Security Guard, Serbian #1 | Gustus | 3 | 4 |
| Terry Chen | Tom Fong | Cmdr. Shumway | 1 | 4 |
| Christine Willes | Ms. Foote | Vera Kane | 1 | 3 |
| Steve Bacic | David Wilcroft | Grounder | 1 | 1 |
| Brad Kelly | Confederate Soldier, Lester, Parent (Thug) | Lead Grounder, Harris, Kodiak | 3 | 4 |
| Sarah Jane Redmond | Rosie Polk | Kaylee Lee | 1 | 5 |
| Paul Lazenby | Guard, James Earl Vest | Rockline Warrior, Sidekick | 2 | 4 |
| James Michalopolous | Otto Derzius | Fio | 1 | 4 |
| Nick Hunnings | Cahoon | Lee | 1 | 4 |
| Sharon Taylor | Jasmine Richards | Council Member #2 | 1 | 4 |
| Catherine Lough Haggquist | Lisa | Council Member #1 | 1 | 3 |
| Michael Adamthwaite | Rory Derkins | Reaper | 1 | 1 |
| Bill Marchant | Professor Bob Stein | Senior Council Member | 1 | 4 |
| Sean Quan | Pale Boy #3 | Rex | 1 | 7 |
| Bradley Stryker | Stuart "Stu" Crawford | Baylis | 1 | 2 |
| Primo Allon | Gabriel Appel | Chief Guard | 1 | 2 |
| Andrew Francis | Dickie | Boy in Mask | 1 | 1 |
| Ben Cotton | Barlow, Chance Cade | Red | 2 | 2 |
| Christian Tessier | Chad Emigh | Caspian | 1 | 1 |
| Elysia Rotaru | Lantern Lady | Musgrave | 1 | 1 |
| Michael Jonsson | Redneck #1, Stuart Coburn | Esop | 2 | 1 |
| Reese Alexander | Patterson | Guard | 1 | 2 |
| Yee Jee Tso | Perry | Cameron | 1 | 2 |
| Zak Santiago | Manny | Semet | 1 | 2 |
| Leah Gibson | Slut | Gina Martin | 1 | 2 |
| Crystal Balint | Reporter | Gemma Cadogan | 1 | 1 |
| Jason Vaisvila | Milosh | Ice Nation Healer | 1 | 1 |
| Olivia Steele-Falconer | 12 Year-Old Girl | Young Octavia | 1 | 1 |
| Greyston Holt | Todd Kramer | Gavin / Marcus Kane II | 1 | 2 |
| Patrick Sabongui | Tito | Sindri | 1 | 2 |
| Teach Grant | Salvage Yard Worker | Cuyler Ridley | 1 | 2 |
| Dalias Blake | Worker #1 | Other Tech | 1 | 1 |
| Jason Cermak | Morrison | Hull | 1 | 1 |
| John DeSantis | Seven Foot Tall Man | Gideon | 1 | 2 |
| Luvia Petersen | Arlene | Sienna | 1 | 1 |
| Shaw Madson | EMT | Angry Parent #2, Unit Monitor | 1 | 2 |
| Chad Riley | Guard | Osias | 1 | 1 |
| Chelah Horsdal | Beth | Simone Lightbourne | 1 | 1 |
| Darcy Laurie | Bodie Lambert | Tybe | 1 | 1 |
| Kathleen Duborg | Mary Vallery | August's Mom | 1 | 1 |
| Sean Owen Roberts | Juice Box | Wayne Szybunka | 1 | 1 |
| Sean Tyson | Jake | Miner #1 | 1 | 1 |
| Tommy Europe | Kelly | Harris | 1 | 1 |
| Dagan Nish | Nearby Yogi | Kahlan | 1 | 2 |
| Deni DeLory | Mother | Paula | 1 | 2 |
| Pippa Mackie | Drive-Thru Attendant, Legal Aid | Mt. Weather Teenage Girl | 2 | 1 |
| Colin Foo | Fruit Stand Vendor | Pei Chao | 1 | 1 |
| Darryl Scheelar | Scott Williams | Sonic Driller | 1 | 1 |
| Dean Redman | T-Bone | Guard | 1 | 1 |
| Graem Beddoes | Officer Bachynsky | Harris | 1 | 1 |
| Jackson Berlin | Sound Guy | Garza | 1 | 1 |
| Tristan Jensen | Patron #4 | Captain Sea Grounder | 1 | 2 |
| Phillip Mitchell | Frank Crossley | Large Prisoner | 1 | 1 |
| Artine Brown | Officer Koontz | Lt. Graco | 1 | 2 |
| Charles Zuckermann | Armed Assailant #1 | Grizzled Warrior | 1 | 1 |
| David Attar | Nestling Man | Terro | 1 | 1 |
| Eliza Faria | Pale Girl #2 | Grounder Girl | 1 | 1 |
| Gardiner Millar | Ranger De Soto | Scarfaced Grounder | 1 | 1 |
| Patrick Keating | Landlord | Groundskeeper | 1 | 1 |
| Rick Dobran | Mechanic | Merchant | 1 | 1 |
| Suzanne Ristic | Cleaning Lady | Woman | 1 | 1 |
| Tiara Sorensen | Shelly Aaronson | Lily | 1 | 1 |
| Anesha Bailey | Student #3 | Young Trikru Woman | 1 | 1 |
| Ian Rozylo | Doorman | Diyoza Prime Guard | 1 | 1 |
| Jaeson Lee | Criminal #1 | Tomac | 1 | 1 |
| Ryan Hesp | Patron #2 | Man | 1 | 1 |
| Arleo Dordar | Ricky Fletcher | Lexa's Guard | 1 | 1 |
| Mike Klemak | Young Man | Guard | 1 | 1 |
| Zara Durrani | Saleha | Egyptian Scavenger | 1 | 1 |
| Lee Tichon | Bartender | Pike's Guard | 1 | 1 |
| Todd Scott | Confederate Soldier | First Prisoner | 1 | 1 |
| Troy Everett | Private Tuke | Volunteer | 1 | 1 |
| Andre Tricoteux | Leatherface | War Chief #3 | 1 | 1 |
| David Coles | Jonny G | Kuba | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.