| Name | Character | Episodes |
|---|---|---|
| Michael Landes | Detective Nicholas O'Malley | 19 |
| Danny Woodburn | Carl the Gnome | 19 |
| Richard Gant | Captain Richard Page | 19 |
| Alexondra Lee | Detective Kate Benson | 19 |
| Jonathan Togo | Jonathan | 12 |
| Sean Whalen | Sean Radmon | 6 |
| Ping Wu | Ming Wa | 6 |
| Pauley Perrette | Alice Cramer | 4 |
| Mike Rad | Jerry | 4 |
| Ron Dean | Police Captain | 2 |
| Marnie Alton | Marnie | 2 |
| Cobie Smulders | Zoe | 1 |
| Amy Acker | Nancy | 1 |
| Tom Welling | Male Victim | 1 |
| Marina Black | Dr. Colleen Moore | 1 |
| Vic Chao | Asian Man | 1 |
| Tsianina Joelson | Julie | 1 |
| Jack Coleman | George Armstrong | 1 |
| Elaine Hendrix | Medusa | 1 |
| Willie Garson | Little Brother | 1 |
| Willie Garson | Ross Bowman / Amphorian / Cupid | 1 |
| John de Lancie | King of the Links | 1 |
| Jodelle Ferland | Focus Group Girl | 1 |
| Brianna Brown | Candy | 1 |
| Lola Glaudini | Isabelle | 1 |
| Mark Sheppard | The Chameleon | 1 |
| Shaun Sipos | Teen Guy | 1 |
| Ben Cotton | Clay | 1 |
| Cameron Bancroft | Craig Richards | 1 |
| Michael B. Silver | Rich Talridge | 1 |
| Lauren K. Robek | Miriam Williams | 1 |
| Laura Mennell | Amber | 1 |
| April Telek | Miss Understanding | 1 |
| Michael Eklund | White Guy | 1 |
| Stefanie von Pfetten | Medusa's Sister | 1 |
| Hiro Kanagawa | Madison | 1 |
| Antonio Cupo | Dylan Michaels | 1 |
| Chelan Simmons | Naughty Girl | 1 |
| Giacomo Baessato | Jake Thomas | 1 |
| Natasha Wilson | Trish | 1 |
| Kevin O'Grady | Actor | 1 |
| Tim Henry | Judge Arpano | 1 |
| Lindsey McKeon | Female Victim | 1 |
| Casey Dubois | Murphy | 1 |
| Sebastian Spence | Ian | 1 |
| Peter Bryant | Connolly | 1 |
| Taylor Negron | Harold the Sphinx | 1 |
| Erica Cerra | Pretty Girl | 1 |
| Eric Keenleyside | Arnie | 1 |
| Dominic Keating | Dr. Harlan Edens | 1 |
| Michelle Krusiec | Parasite | 1 |
| Brent Sexton | Edwards | 1 |
| Dee Jay Jackson | Uniform Cop | 1 |
| Jenna Boyd | (voice) | 1 |
| Nikita Ager | Alice Chadmoure | 1 |
| Brad Dryborough | Boom Operator | 1 |
| Rick Cramer | Big Brother | 1 |
| Alan Blumenfeld | Dr. Marcus | 1 |
| Matt Hill | Richie | 1 |
| Sonya Salomaa | Waitress | 1 |
| Sammi Rotibi | Cop | 1 |
| Bill Dow | Al Capone | 1 |
| Craig Veroni | Officer Maguire | 1 |
| Charles Zuckermann | Security Guard | 1 |
| Malcolm Scott | Doug / Dale | 1 |
| Jeremy Jones | Eddie Williams | 1 |
| Carrie Genzel | Lauren | 1 |
| Shaun Toub | Herkamer | 1 |
| Scott Rinker | Antique Store Customer | 1 |
| Michael Teigen | Classmate | 1 |
| Stefan Arngrim | Jared Steck | 1 |
| Darren Moore | Gnarly Defendant | 1 |
| David Starzyk | Dr. Loceff | 1 |
| Fred Ewanuick | Bus Passenger | 1 |
| Peter New | Shady Guy | 1 |
| Vincent Gale | Martinez | 1 |
| Kirby Morrow | Scott Caputo | 1 |
| Jennifer Clement | Housewife | 1 |
| Rob deLeeuw | Teddy | 1 |
| Kurt Carley | Link | 1 |
| Kurt Carley | Merman | 1 |
| Kurt Carley | Frankie the Link | 1 |
| Darren E. Scott | EMT | 1 |
| Garfield Wilson | Policeman | 1 |
| Courtney Peldon | Megan Benson | 1 |
| James Ashcroft | Walter | 1 |
| Rob Lee | Producer | 1 |
| Darcy Laurie | Meyers | 1 |
| Lenno Britos | Miguel Terrera | 1 |
| Michael P. Northey | Sharkey's Bartender | 1 |
| Deanna Milligan | Arianna Wilkerson-Allegro-Pantera-Bernbaum | 1 |
| Mik Scriba | Officer Green | 1 |
| Peter Hall | Maitre'D | 1 |
| Jody Thompson | Heather | 1 |
| Tyler Christopher | Det. David Scott | 1 |
| Dave 'Squatch' Ward | 1 | |
| Dave 'Squatch' Ward | Jackie | 1 |
| Simon Longmore | Man | 1 |
| Beverley Elliott | Housewife | 1 |
| Erika Slezak | Nick's Mother | 1 |
| Tania Saulnier | Urban Princess | 1 |
| Michael Daingerfield | Federal Marshall | 1 |
| Shaine Jones | David Mayer | 1 |
| Dean Paul Gibson | Bruno Menello | 1 |
| Artine Tony Browne | Street Hustler | 1 |
| J. Douglas Stewart | Scott the Mailman | 1 |
| Holly Eglington | Dancer | 1 |
| Eileen April Boylan | Girl | 1 |
| Ellen Ewusie | Lacy | 1 |
| Byron Lucas | Matt | 1 |
| Daniella Evangelista | Teen Girl | 1 |
| Adrian Formosa | Security Guard | 1 |
| Link Baker | Officer Dixon | 1 |
| Craig March | Husband | 1 |
| Kerri Smith | Nora | 1 |
| Daisy McCrackin | Natalie / Genie | 1 |
| Stephen Park | Tech | 1 |
| Lindsay Maxwell | Kerri Thomas | 1 |
| Kis Yurij | Young Working Guy | 1 |
| Frank Ferrucci | Construction Worker | 1 |
| Eliza Norbury | Safron | 1 |
| Eli Gabay | Wesley the Fire Devil | 1 |
| Damon Johnson | Jesse James | 1 |
| Will Kempe | Doctor Handal | 1 |
| Sam Whipple | Wishing Will | 1 |
| Andrew Moxham | Stoner Ted G. Freeman | 1 |
| Andrew Johnston | Detective Green | 1 |
| Shayn Solberg | Stan | 1 |
| Lara Phillips | Gossamer Fairy | 1 |
| Marcel Maillard | Kate's Grandpa | 1 |
| Bryan Kirkwood | Neil Roberts | 1 |
| John F. O'Donohue | Sergeant | 1 |
| Dax Belanger | Reporter | 1 |
| Brook Kerr | 1 | |
| L. Harvey Gold | Judge | 1 |
| Steven Ho | Mummy | 1 |
| Mike Rad | Cashier | 1 |
| Andrew Laurenson | Edwin Cass | 1 |
| Susanne Wright | Overweight Woman | 1 |
| Ian Carter | Stage Manager | 1 |
| John R. Taylor | Mr. Creelman | 1 |
| Angela Van De Walle | Jennifer Helms | 1 |
| Brad Sihvon | Jimmy Green | 1 |