Season 1/Single Episode Guest Stars

• Tim Bagley as Postman ("Pilot")
• Currie Graham as Frank Rabe ("Bears Will Be Bears")
• Amy Gumenick as Gilda Darner ("Bears Will Be Bears")
• Parker Bagley as Barry Rabe ("Bears Will Be Bears")
• Alexander Mendeluk as Rocky ("Bears Will Be Bears")
• Nana Visitor as Melissa Wincroft ("Beeware")
• Patrick Fischler as Billy Capra ("Lonelyhearts")
• Nick Thurston as Roddy Geiger ("Danse Macabre")
• Judith Hoag as Mrs. Jessup ("Danse Macabre")
• Amelia Rose Blaire as Sarah Jennings ("Danse Macabre")
• Brad William Henke as Hap Lasser ("The Three Bad Wolves")
• Jaime Ray Newman as Angelina Lasser ("The Three Bad Wolves")
• Daniel Roebuck as Orson ("The Three Bad Wolves")
• Claudia Christian as Mrs. Clark ("Let Your Hair Down")
• Ted Rooney as James Addison ("Let Your Hair Down")
• Eric Edelstein as Oleg Stark ("Game Ogre")
• Amanda Walsh as Natalie Haverstraw ("Of Mouse and Man")
• Fred Koehler as Martin Burgess ("Of Mouse and Man")
• Valerie Cruz as Dr. Levine ("Organ Grinder")
• Daryl Sabara as Hanson ("Organ Grinder")
• Hannah Marks as Gracie ("Organ Grinder")
• Amy Acker as Lena Marcinko ("Tarantella")
• Nicholas Gonzalez as Ryan Showalter ("Tarantella")
• Nick Chinlund as Leo Taymor ("Last Grimm Standing")
• BJ Britt as Brian Cooney ("Last Grimm Standing")
• Titus Welliver as Farley Kolt ("Three Coins in a Fuchsbau")
• Jordi Caballero as Soledad Marquesa ("Three Coins in a Fuchsbau")
• Alan Smyth as Ian Flynn ("Three Coins in a Fuchsbau")
• Daniel Baldwin as Jordan Vance ("Plumed Serpent")
• Danielle Panabaker as Ariel Eberhart ("Plumed Serpent")
• Azura Skye as Robin Steinkellner ("The Thing with Feathers")
• Josh Randall as Tim Steinkellner ("The Thing with Feathers")
• Jessica Tuck as Catherine Schade ("Love Sick")
• Sebastian Roché as Edgar Waltz ("Cat and Mouse")
• Neil Hopkins as Ian Harmon ("Cat and Mouse")
• David Zayas as Sal Butrell ("Leave It to Beavers")
• Traber Burns as Robert Grosszahn ("Leave It to Beavers")
• David Clayton Rogers as Arthur Jarvis ("Happily Ever Aftermath")
• Amanda Schull as Lucinda Jarvis ("Happily Ever Aftermath")
• Tom Wright as Spencer Harrison ("Happily Ever Aftermath")
• Roger Bart as Konstantin Brinkerhoff ("Big Feet")
• Kenneth Mitchell as Larry Mackenzie ("Big Feet")
• Fulvio Cecere as Reynaldo ("Big Feet")
• Brian Tee as Akira Kimura ("Woman in Black")
• Scott Morgan as Nathaniel Adams ("Woman in Black")
• Mary Elizabeth Mastrantonio as Kelly Burkhardt ("Woman in Black")