Name	Known for
Yannick Bisson Detective William Murdoch Detective William Murdoch See fewer	Murdoch Mysteries (2008)
Helene Joy Dr. Julia Ogden (as Hélène Joy) Dr. Julia Ogden (as Hélène Joy) See fewer	Murdoch Mysteries (2008)
Thomas Craig Inspector Thomas Brackenreid Inspector Thomas Brackenreid See fewer	Murdoch Mysteries (2008)
Jonny Harris Constable George Crabtree Constable George Crabtree See fewer	Still Standing (2015)
Lachlan Murdoch Constable Henry Higgins Constable Henry Higgins See fewer	Cheats (2002)
Daniel Maslany Detective Llewellyn Watts Detective Llewellyn Watts See fewer	Impulse (2018)
Shanice Banton Violet Hart Violet Hart See fewer	Race (I) (2016)
Clare McConnell Effie Newsome Effie Newsome See fewer	Star Trek: Discovery (2017)
Grahame Wood Mr. Hathaway Mr. Hathaway See fewer	The Orville (2017)
Jamie Thomas King Ernest Castle / King George V Ernest Castle / King George V See fewer	Mad Men (2007)
Tony Nappo Dr. Gordon Bellows / Elijah Biggerstaff Dr. Gordon Bellows / Elijah Biggerstaff See fewer	Land of the Dead (2005)
Simon Phillips Wadsworth Wadsworth See fewer	Survive the Game (2021)
Cynthia Ashperger Zlata Zlata See fewer	Race for the Bomb (1987)
Tracy Michailidis Bernadette Childs Bernadette Childs See fewer	Nurse (2013)
Lindsay Leese Nellie Alcock Nellie Alcock See fewer	Everything's Going to Be Great
Zachary Amzallag Marcel Marcel See fewer	Moonfall (2022)
Brad Borbridge Rupert Rupert See fewer	Harold & Kumar Go to White Castle (2004)
Paul Irving Constable Paul Harris Constable Paul Harris See fewer	Murdoch Mysteries (2008)