Mitchell was born on April 17, 1985 and grew up on the Gold Coast. His parents later divorced and both went on to remarry.
Mitchell has three brothers and a younger sister, Bree. His older brother coaches tennis, while his younger brother, Ben, is in the top 10 of Australian Tennis Players.
He attended Nerang State High School. He played tennis from the age of five to nineteen. He aimed to go professional, but gave it up after realising it was the only thing in his life.
|2009 - 2013||Romeo Smith||Home and Away||673 Episodes.|
|2013 - 2014||John Young||The Tomorrow People||22 Episodes.|
|2015 - 2016||Lincoln Campbell||Agents of S.H.I.E.L.D.||29 Episodes.|
|2016||Nelson Quinn||Mothers and Daughters||Movie.|
|2016 - 2018||Roman||Blindspot||Regular Role, Season Two and Three.|
|2019||Captain John "Abe" Abraham||The Code||Regular Role, replacing Dave Annable from pilot to series.|
- Mitchell's height is 6' 1" (1.85 m).
- He is married to Rebecca Breeds, his Home and Away co-star and one-time on screen love interest.