Born Markell V. Efimoff in Everett, Washington, Young began acting at the age of 9 and moved to Los Angeles when he was 12 to pursue his career. His first significant on-screen credit was a small role in two episodes of the HBO series Six Feet Under.
Young's other notable appearances include television shows The OC, Dexter, Big Love, Childrens Hospital, Heroes, Secret Life of the American Teenager, Cold Case, ER, CSI: Crime Scene Investigation a...
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Happiness Runs
As Victor
Sex Drive
As Randy
The Lucky Ones
As Scott Cheaver
Movie 43
As Calvin (uncredited)
We're the Millers
As Scottie P.
Tammy
As Jesse
The Curse of Downers Grove
As Ian
Daddy's Home
As Dental Hygienist
Swing State
As Neil Hornback
Bad Art
As Benji
Harry + Max
As Harry, Age 15
Beneath
As Grubbs
CSI: Miami
As Lucas Hall
The Inbetweeners
As Neil Sutherland
The Comeback
As Tyler
Heroes
As Jeremy Greer
Dexter
As Jeremy Downs
Childrens Hospital
As Raye LePlante
Ten Days in the Valley
As PJ
Code Black
As Justin Keller
Criminal Minds
As Owen Porter
Filthy Rich
As Jason Conley
Life in Pieces
As Scarecrow
Veronica Mars
As Jimmy
The O.C.
As Prepubescent Geek