All 118 actors in both Once Upon a Time and Psych
118 actors have appeared in both Once Upon a Time and Psych, across 275 episodes. The most-credited is Beverley Elliott, Granny in Once Upon a Time and Doris in Psych.
| Actor | In Once Upon a Time | In Psych | Eps | Eps |
|---|---|---|---|---|
| Beverley Elliott | Granny | Doris | 59 | 1 |
| Gabe Khouth | Sneezy / Mr. Clark | Jemison, Luke Bauer | 43 | 2 |
| Keegan Connor Tracy | Blue Fairy / Mother Superior | Priscilla Osterman | 30 | 1 |
| Meghan Ory | Red Riding Hood / Ruby | Josie | 19 | 1 |
| Sage Brocklebank | Sir Gaston | Buzz McNab | 1 | 57 |
| Skyler Gisondo | Devin | Young Shawn | 1 | 11 |
| Olivia Steele-Falconer | Violet | 12 Year-Old Girl | 8 | 1 |
| Chris Gauthier | William Smee | Earlie, Juror #3 | 14 | 2 |
| Michael Coleman | Happy | Student #3 | 38 | 1 |
| Eric Keenleyside | Sir Maurice / Moe French | Steve Hitchcock | 6 | 1 |
| Jeffrey Kaiser | Dopey | Valet | 29 | 2 |
| Gabrielle Rose | Ruth | Ruth Blake | 4 | 1 |
| Pascale Hutton | Gerda, Queen Arendelle, Regal Woman | Katarina McCallum | 3 | 1 |
| Jason Burkart | Little John | Montero | 10 | 1 |
| Aleks Paunovic | Berkley | Bartender, Security Guard, Serbian #1 | 1 | 3 |
| Brad Dourif | Zoso | Bernie Bethel | 2 | 1 |
| Ernie Hudson | Poseidon | William "Bill" Guster | 1 | 1 |
| Geoff Gustafson | Stealthy | Salon Attendant | 4 | 1 |
| John Rhys-Davies | Grand Pabbie | Christopher Holm | 3 | 1 |
| Paul Lazenby | Claude, Black Knight No. 1, Mirror-Carrying Knight | Guard, James Earl Vest | 4 | 2 |
| Ryan Robbins | Sir Morgan | Vernon Stallings | 1 | 1 |
| Sandy Wayne Robson | Perp | Logan | 3 | 1 |
| Trevor Roberts | Remy | Fan #1 | 4 | 1 |
| Ty Olsson | Hordor | Manetti | 1 | 1 |
| C. Ernst Harth | Abraham, Burly Man, Ogre | Security Guard | 3 | 1 |
| David Bloom | Mr. “K” Krzyszkowski | Nathaniel Gresling | 2 | 1 |
| Chilton Crane | Hilda | Mrs. Ryan | 3 | 1 |
| Kam Kozak | Black Guard | Armed Guard | 1 | 1 |
| Lisa Banes | Lady Tremaine | Edna Crocker | 1 | 1 |
| Michael Adamthwaite | Alistair | Rory Derkins | 1 | 1 |
| Yvette Nicole Brown | Ursula The Sea Goddess | Hazel Lazarus | 1 | 1 |
| Adrian Hough | Woodcutter | Moustache Man | 2 | 1 |
| Alex Zahara | Midas | Alan Zenuk | 2 | 1 |
| Dalias Blake | Palace Guard | Worker #1 | 1 | 1 |
| Eva Bourne | Princess Eva | Mary | 2 | 1 |
| Greyston Holt | Jim/Frederick | Todd Kramer | 2 | 1 |
| Howard Siegel | Tavern Owner | Senior Mechanic | 1 | 1 |
| Jonathan Holmes | Majordomo | Hotel Clerk, Maitre 'D | 1 | 2 |
| Richard Stroh | Edgar | Guard | 1 | 2 |
| Sarah Hayward | Villager | Neighbor | 2 | 1 |
| Andrew Kavadas | Baron Danglars | 'Arry | 1 | 1 |
| Ben Wilkinson | Hank | Vance McMillan | 1 | 1 |
| Brent Stait | The Author | Randy | 1 | 1 |
| Darcey Johnson | Oaken | Kevin Cargile | 1 | 1 |
| Jason Simpson | Adda | Vladimir | 1 | 1 |
| Peter Bryant | Jailer | FBI Agent | 1 | 1 |
| Primo Allon | Gadling | Gabriel Appel | 1 | 1 |
| Rick Dobran | Raskind | Mechanic | 1 | 1 |
| Ted Whittall | The King / Mitchell Herman | Dick Cheney | 1 | 1 |
| Tristan Jensen | Horatio | Patron #4 | 1 | 1 |
| Gavin Cooke | Drunken Lout | Disgruntled Delivery Person, Gun Master | 1 | 2 |
| Bailey Herbert | Young Helga | Young Juliet | 1 | 1 |
| Catherine Lough Haggquist | Fairy Godmother | Lisa | 1 | 1 |
| Donna Soares | Nurse | Officer | 1 | 1 |
| Gaalen Engen | Bar Patron | German Man | 1 | 1 |
| Jason Cermak | Black Knight #1 | Morrison | 1 | 1 |
| Josh Kalender | Black Knight #1 | Rico | 1 | 1 |
| Joy Castro | Nurse | Office Gal #2 | 2 | 1 |
| Karen Holness | Witch of the North | Lillian | 1 | 1 |
| Keith Dallas | Cabbie | Shanks | 1 | 1 |
| Kwesi Ameyaw | Dr. Thatcher | Detective Ocampo | 1 | 1 |
| Michael Teigen | Rivers | Dan "D.C." Carter | 1 | 1 |
| Nelson Wong | Paramedic | Bartender | 1 | 1 |
| Nick Hunnings | Peasant, Prison Guard | Cahoon | 2 | 1 |
| Zak Santiago | Prince Henry | Manny | 1 | 1 |
| Angela Moore | Villager | Female Officer | 1 | 1 |
| Cainan Wiebe | Hooded Lost Boy | Isaac | 1 | 1 |
| Chad Riley | Black Knight #2 | Guard | 1 | 1 |
| Darcy Laurie | Louie | Bodie Lambert | 1 | 1 |
| David Nykl | Fisherman | Events Coordinator | 1 | 1 |
| Doug Abrahams | Sheriff | Range Master | 1 | 1 |
| Emanuel Fappas | Bartender | Chuy | 1 | 1 |
| Mark Gash | Father | Restaurant Manager | 1 | 1 |
| Peter Ciuffa | Deli Owner | Sergei Vangieff | 1 | 1 |
| Robert Mann | Peasant #1 | Mortician | 1 | 1 |
| Scott E. Miller | Mr. Grace | Adam | 1 | 1 |
| Sean Owen Roberts | Ruffian | Juice Box | 1 | 1 |
| Steve Makaj | Captain | Safety Inspector Butch Hicks | 1 | 1 |
| Teach Grant | Dead Eye | Salvage Yard Worker | 1 | 1 |
| Tony Alcantar | Cashier | Auctioneer | 1 | 1 |
| Amos Stern | Lead Knight | Bouncer | 1 | 1 |
| Andre Tricoteux | Argyle, Massive Brawler | Leatherface | 2 | 1 |
| Darla Fay | Woman on Bus | Local Citizen | 1 | 1 |
| Demord Dann | Aide | Leonard "Diddle" Callahan | 1 | 1 |
| Gina Stockdale | Auntie Em | Poppy | 1 | 1 |
| Graem Beddoes | Gruff Patron | Officer Bachynsky | 1 | 1 |
| Graham Verchere | Young Apprentice | Buduski | 1 | 1 |
| Lee Majdoub | Sir Kay | Neil | 1 | 1 |
| Mackenzie Gray | Hob | Gregor Uwe-Steeb | 1 | 1 |
| Marc-Anthony Massiah | Portland Cop | Surveillance Tech #2 | 1 | 1 |
| Paul Kloegman | Carriage Driver | Wim Stuyvesant | 1 | 1 |
| Russell Roberts | Duke | Host | 1 | 1 |
| Sharon Taylor | Witch of the East | Jasmine Richards | 1 | 1 |
| Toby Levins | Sergeant | Leonardo | 1 | 1 |
| Tom Pickett | Bishop | Lou Gamble | 2 | 1 |
| Guy Fauchon | Vortigan | Dietrich Mannheim | 1 | 1 |
| John DeSantis | The Dove | Seven Foot Tall Man | 1 | 1 |
| Kate Dion | Goldilocks | Office Gal #1 | 1 | 1 |
| Kyra Leroux | Yarrow | Pippi Longstocking | 1 | 1 |
| Lee Tichon | Guard | Bartender | 1 | 1 |
| Nicholas Carella | Bartender | Hotel Clerk | 1 | 1 |
| Richard Ian Cox | Watchy | Desk Clerk Bobby | 1 | 1 |
| Zahf Paroo | Prince Achmed | Finch | 1 | 1 |
| Noah Beggs | Man, Mob Guy | Worker | 2 | 1 |
| Artine Brown | Arresting Cop | Officer Koontz | 1 | 1 |
| Cameron Bancroft | Bill | Ken Dowling | 1 | 1 |
| Candus Churchill | Librarian | Lady | 1 | 1 |
| Charles Zuckermann | Black Knight #1 | Armed Assailant #1 | 1 | 1 |
| John Innes | Older Man | Chief Herb Wilkins | 1 | 1 |
| Ken Kramer | Bossy | Buddy | 1 | 1 |
| Olena Medwid | Partygoer #1 | Billy Lipp's Girlfriend | 1 | 1 |
| Chris Shields | Military Advisor | Minister | 1 | 1 |
| Fane Tse | Customer | Quan Phung | 1 | 1 |
| Matt Ellis | Francisco | Lance Tolkin | 1 | 1 |
| Ryan Hesp | Quartermaster | Patron #2 | 1 | 1 |
| Darien Provost | Twin #1 | Little Boy | 1 | 1 |
| Michael Roberds | Donkey Driver | Manager | 1 | 1 |
| Osmond Bramble | Queen's Guard | Bailiff | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.