He said he watched Mitte grow into “a really fine actor”.
“All that promise and potential now is such a loss,” he wrote.
He said learning Mitte had died by suspected suicide was “especially devastating”.
Cranston said the two were texting “just a few weeks ago”, making plans to meet for lunch.
“I don’t know if that lunch would have changed his future…
“But I do know that I loved him, and thoroughly enjoyed being with him throughout the years on the series, and after the spotlight on Breaking Bad dimmed…
“I’ll miss you, son,” Cranston said.
Aaron Paul, who played Jesse Pinkman in the series, also paid tribute to Mitte.
“I am at a loss. I am heartbroken over this news. RJ, I love you my friend. You will be missed. And to whoever happens to be reading this, please know you are loved, and you are not alone. Always remember that,” Paul said in a statement shared by the Hollywood Reporter.
Dean Norris, who played Hank Schrader in the show, said it was “heartbreaking” to hear of Mitte’s death.
Oh my God! Was working just found out about RJ
I am heartbroken
Though RJ didn’t play my TV son, I always looked out for him as a young kid on set. He was a sweetheart of a young man and will be greatly missed. This is so heartbreaking, I can’t believe it. Thinking of him and…
— Dean Norris (@deanjnorris) October 12, 2026
Actor Marlee Matlin said she was “devastated” to hear the news.
Authorities have confirmed the actor died in Texas on Tuesday. While investigations continue, his death has been reported as a suspected suicide.
Mitte was an acclaimed actor and a cerebral palsy advocate.
The 34-year-old appeared in 56 episodes of the hit series Breaking Bad.
He was also known for his roles in The Oak Room, The Recall and The Guardians of Justice (Will Save You!).