[1] Originally from Louisiana, Sinqua moved to Marina del Rey, California, with his family and attended El Segundo High School.

[citation needed] During college, Walls played on the San Francisco Dons men's basketball team.

[2] Walls played Boyd, a beta werewolf who was a formerly recurring character on the MTV drama series Teen Wolf.

[3] He has also made appearances on Pair of Kings, Lincoln Heights, Friday Night Lights, Grey's Anatomy, Blue Mountain State, The Secret Life of the American Teenager, Necessary Roughness,[4] and on MTV's Next.

[8][9] On August 1, 2017, Walls was cast in Clint Eastwood's biopic The 15:17 to Paris, about the thwarted 2015 Thalys train attack.