Riggs made his acting debut in a musical theater The Wizard of Oz, an Atlanta's Fox Theater production. After some year, he appeared in a drama movie Get Low, which was directed by Aaron Schneider. The co-stars of this movie are Robert Duvall, Bill Murray, Lucas Black, and Bill Cobbs. The total budget for this movie was $7 million and made a collection of $9.7 million.
After a year, Riggs appeared in an American post-apocalyptic horror television series The Walking Dead that lead him to more popularity. The cast members of this series are Andrew Lincoln, Laurie Holden, Jeffrey DeMunn, and Steven Yeun. This series was aired on AMC, an American basic cable, and satellite television channel.
Recently, Riggs appeared in an American horror movie Keep Watching, which was directed by Sean Carter. The co-stars of this movie are Bella Thorne, Ioan Gruffudd, and Natalie Martinez. The movie made a collection of $94,178 at the box office against the budget of $5 million.
Similarly, Riggs appeared in numerous other movies and television series like The Wronged Man, Terminus, Mercy, Talking Dead, and Robot Chicken. He is the winner of several awards like Satellite Award, Saturn Award, Young Artist Award, and Saturn Award.
Riggs is an American by nationality and belongs to white ethnicity. Currently, he is considered single and seems very secretive about his love affair and girlfriend. He seems busy in developing his career instead of being in a relationship. Previously, he had an affair with his girlfriend, Hana Hayes.
Riggs earns a huge amount of money from his professional acting career. He has appeared in numerous movies and television series from which he must have collected a decent amount of salary. According to some source, his current net worth is estimated to be $2.5 million.