He is known for playing Vincent/Finn in The Originals, Doug in the 2005 film The Interpreter, and Clarence Greene in the 2006 film House at the End of the Drive. His television work includes guest roles on the television series Hack (2003), Law & Order: Criminal Intent (2003), CSI: Crime Scene Investigation (2006) and CSI: Miami (2007). Since 2014, Gatewood has been playing the dual characters of Finn Mikaelson and Vincent Griffith on The CW supernatural television series The Originals.
|2000||House at the End of the Drive||Howard|
|2014||House at the End of the Drive||Clarence Greene|
|2003||Hack||Truby||Episode: "Forgive, But Don't Forget"|
|2003||Law & Order: Criminal Intent||Detective Lewis||Episode: "Stray"|
|2006||CSI: Crime Scene Investigation||DJ||Episode: "Built to Kill: Part 1"|
|2007||CSI: Miami||Gary Howardwick||Episode: "Bang, Bang, Your Debt"|
|2008||Lincoln Heights||Episode: "Glass House"|
|2008||Mask of the Ninja||Ed||TV movie|
|2014–2018||The Originals||Vincent Griffith/Finn Mikaelson|| Guest role (Season 1)|
Recurring role (Season 2)
Main role (Season 2 - Season 5)
|2020||The Umbrella Academy||Raymond Chestnut||Main role|
- Initially joining Season Two as a recurring guest star, he became a series regular in the second half of the season, starting with I Love You, Goodbye.
- He's the non-lead starring cast member with the most appearances in Season Two.