Johnson was born and raised in West Jordan, Utah, he and his family were poor and lived in a rough part of the town.

[5] Before taping for the Ultimate Fighter, DaMarques taught children's Brazilian jiu-jitsu classes at Sandy's Elite Performance gym.

[6] Johnson, who in the earlier portions of his career fought as high in the weight classes as Heavyweight had his first fight in 2005, losing by technical knockout.

He defeated Ray Elbe by technical knockout in an elimination match earning him a spot on the United States team.

[8] Johnson also gained notoriety throughout the series due to his ongoing feud with Team UK coach Michael Bisping.

However, the comment was made by fellow USA teammate Cameron Dollar, causing Bisping to apologize to Johnson for his behavior.

Johnson lost his UFC debut when he fought James Wilks on June 20, 2009, in Las Vegas to crown the TUF 9 welterweight winner.

At UFC 112, Johnson fought seasoned veteran Brad Blackburn, defeating him via third-round TKO with a kick to the body and follow up punches.

Johnson faced Amir Sadollah on March 26, 2011, at UFC Fight Night 24, replacing an injured James Wilks on just two weeks notice.

Johnson was tabbed as a short notice replacement and faced promotional newcomer Gunnar Nelson at a catchweight of 175 lbs.

[24] Finally, over a year after his UFC release, Johnson faced Ian Williams at Cage Warrior Combat 9 on November 2, 2013.

[26] He was expected to face Dan Stittgen in the main event of APFC 16 on April 5, 2014,[27] however Johnson was removed from the bout and the fight was cancelled.