Roy Frank "RJ" Mitte III (born August 21, 1992) is an American actor, producer, and model. He is best known for his role as Walter "Flynn" White Jr. on the AMC series Breaking Bad (2008–13). Like his character on the show, he has cerebral palsy.  After moving to Hollywood in 2006, he began training with personal talent manager Addison Witt. They sought acting opportunities where his disability would serve to educate viewers, which led him to audition for the role in Breaking Bad.
Mitte was born in Jackson, Mississippi. He was delivered by emergency caesarian and was not breathing at the time of his birth, which resulted in permanent brain damage. He was adopted a few weeks later by Roy Frank Mitte Jr. and Dyna Mitte, who later separated. He was diagnosed with cerebral palsy at the age of three, and doctors put his legs in casts for six months in an attempt to straighten his feet.
Mitte was fitted with leg braces and used crutches throughout most of his childhood; however, over time, his body became stronger through sports and exercise; he no longer needed any walking devices by his teenage years. In 2006, he moved with his family to Los Angeles, where his younger sister Lacianne Carriere had received an offer for a role in a film project.
Mitte was raised by his mother following the separation of his parents, and from the age of 13 was financially responsible for the family, which by then also included his sister who was born when Mitte was 11 years old. He remains responsible and takes on multiple jobs to bring in an income.
After receiving several roles as an extra, including in the Disney series Hannah Montana, Mitte became interested in films and decided to take acting lessons. Shortly after, he was offered the role of Walter White Jr., who also has cerebral palsy, in the AMC series Breaking Bad. At the 2013 Media Access Awards, Mitte received the SAG-AFTRA Harold Russell Award for his portrayal of Walter White, Jr. on the series, and also presented the eponymous RJ Mitte Diversity Award to deaf actor Ryan Lane. The Screen Actors Guild named Mitte as the spokesman for actors with disabilities and he is the representative of "Inclusion in the Arts and Media of Performers with Disabilities", which employs artists with disabilities.
In 2011 he starred in the short horror film Stump. That same year, he worked as executive producer of the documentary Vanished: The Tara Calico Story, that deals with the disappearance of Tara Calico. In 2012 Mitte was cast in the thriller film House of Last Things.
In 2013, Mitte appeared in the music video for "Dead Bite" by rapcore band Hollywood Undead. In January 2014, he began a recurring role on the ABC Family drama series Switched at Birth portraying Campbell, a premed student paralyzed from a snowboarding accident who uses a wheelchair. On July 14, 2016, Mitte was announced as part of British Channel 4's coverage of the 2016 Rio Paralympic Games.
Mitte is producing and will star in the film Wildflowers, along with his teenage sister, Lacianne Carriere. He is also working as a producer on a documentary called The Kids of Widney High. He hopes to branch out into directing.
Mitte appeared on the cover of the February/March 2015 issue of Neurology Now (published by the American Academy of Neurology). The issue included a short biography and his views on cerebral palsy, bullying, and his acting career. He is also a celebrity ambassador for United Cerebral Palsy. 
|2013||House of Last Things||Tim|
|2016||Who's Driving Doug||Doug|
|2007||Hannah Montana||School Jock||Uncredited
Episode: "Schooly Bully"
|2008–2013||Breaking Bad||Walter "Flynn" White, Jr.||53 episodes|
|2013||Vegas||Russ Auster||Episode: "Paiutes"|
|2014||Switched at Birth||Campbell Bingman||9 episodes|
|2016||Robot Chicken||Walter White, Jr. (voice)||Episode: "Food"|
|2017||The Celebrity Island with Bear Grylls||Participant|
|2017||Chance||Patient at convention||Episode: "The Collected Works of William Shakespeare"|
|2013||Hollywood Undead||"Dead Bite"||Child|
|2013||Steel Panther||"Party Like Tomorrow is the End of the World"|
|2016||Nothing but Thieves||"If I Get High"|
|2016||3 Doors Down||"In the Dark"|
|2011||Screen Actors Guild Award||Outstanding Performance by an Ensemble in a Drama Series||Breaking Bad||Nominated|
|2012||Screen Actors Guild Award||Outstanding Performance by an Ensemble in a Drama Series||Breaking Bad||Nominated|
|2012||Young Artist Award||Best Performance in a TV Series - Recurring Young Actor 17-21||Breaking Bad||Nominated|
|2013||Media Access Award||SAG-AFTRA Harold Russell Award||Breaking Bad||Awarded|
|2013||Screen Actors Guild Award||Outstanding Performance by an Ensemble in a Drama Series||Breaking Bad||Won|