Life and career

Knudsen was born in Toronto, Ontario. In 1999 Knudsen got his first acting role as Alex Schreffler in the TV series Real Kids, Real Adventures. In 2001, Knudsen guest starred on The Guardian and appeared in three other episodes. He was nominated for a Young Artist Award for his performance. In 2003, Knudsen starred in the TV series Mental Block.

He co-starred as Leroy "Lefty" in the film adaptation of Youth in Revolt, and Scott Pilgrim vs. the World, as Lucas "Crash" Wilson, who was the lead singer of fictional band Crash and the Boys. In 2005, he starred in the horror film Saw II.

Knudsen portrayed Robbie in the 2011 film Scream 4.

Knudsen plays Ryan in the film The Barrens, co-starring True Blood's Stephen Moyer, which was released in late 2012.

He plays teen tech genius Alec Sadler in the Canadian Science Fiction series Continuum, along with Rachel Nichols and Victor Webster.

Filmography

Year	Title	Role	Notes
1999	Real Kids, Real Adventures	Alex Schreffler	Episode: "Heimlich Hero: The Michelle Shreffler Story"
2000	Tribulation	Young Tom Canboro
2000	Common Ground	Young Johnny Burroughs	TV movie
2000	In a Heartbeat	Jason	Episode: "You Say It's Your Birthday"
2000	Santa Who?	Nasty Boy	TV movie
2001	Blackout	Ian Robbins	TV movie
2001	The Familiar Stranger	Young Chris Welsh	TV movie
2001	Doc	Mitch	Episode: "First Impressions" Episode: "No Time Like the Present"
2001	Stolen Miracle	Tommy	TV movie
2001-2002	The Guardian	Hunter Reed	Episode: "Reunion" Episode: "Home" Episode: "The Beginning"
2003	Full-Court Miracle	TJ Murphy	TV movie
2003-2004	Mental Block	Donovan Mackay	26 episodes
2004	Blue Murder	Jake Green	Episode: "Janet Green"
2005	Kevin Hill	Ryan Stallinger	Episode: "Losing Isn't Everything"
2005	Prize Winner of Defiance, Ohio, TheThe Prize Winner of Defiance, Ohio	Rog Ryan at thirteen years old
2005	Saw II	Daniel Matthews
2006	Booky Makes Her Mark	Arthur Thomson	TV movie
2006	Bon Cop, Bad Cop	Jonathan Ward
2006	Lobster Tale, AA Lobster Tale	Timmy Brock
2006-2008	Jericho	Dale Turner	Series regular (season 1), guest star (season 2); 18 episodes
2008	Teacher's Crime, AA Teacher's Crime	Jeremy Rander	TV movie
2008	Flashpoint	Jackson Barcliffe	Episode: "The Element of Surprise"
2008	Saw V	Daniel Matthews
2009	Youth in Revolt	Leroy "Lefty"
2010	Scott Pilgrim vs. the World	Luke "Crash" Wilson
2011	Beastly	Trey Madison
2011	Scream 4	Robbie Mercer
2012	The Barrens	Ryan
2012	Saving Hope	Mitchell
2012-2015	Continuum	Alec Sadler	Main Role ; 4 seasons ; 42 episodes
2012	Degrassi	Darrin Howe	2 episodes; "Degrassi: Las Vegas" ("Love Fool" parts 1 and 2)
2016	12 Monkeys	Thomas Crawford Jr.

[ Source: Wikipedia ]