Dean Norris and Anna Gunn are mourning their former Breaking Bad co-star R.J. Mitte, who died by suicide at age 34 this week.

Mitte died Monday in Brownsville, Texas, his representative confirmed to The Hollywood Reporter. The actor, who had cerebral palsy, was best known for playing Walter “Flynn” White Jr. on the AMC drama.

Norris addressed the loss during a previously scheduled TalkShopLive appearance after news of Mitte’s death broke. Norris, who played Hank Schrader, had joined the livestream to promote signed copies of his upcoming book, Do What You’re Gonna Do: The Definitive Oral History of Breaking Bad, due for release Nov. 17.

Instead, the conversation repeatedly returned to his grief.

“We’ve had some tragedy in the Breaking Bad family,” Norris said. “It’s unimaginable, it’s unbelievable. It’s heartbreak. Rest in peace, R.J. Sweet, sweet boy, I’m going to miss you a lot.”

Norris Reflects on His Final Meeting With Mitte

Norris revealed that he had seen Mitte approximately three weeks earlier at a fan expo and convention signing.

“Who knew that would be the last time that I would see him,” he said. “So, yes, tragedy has hit us and we’re all just trying to get through it. Rest in peace, R.J.”

When a viewer asked how he was doing, Norris answered candidly: “I’m a little sad right now, a lot of sad right now, that’s how I’m doing. But keep putting one foot in front of the other.”

He said Mitte’s death “will forever change the dynamic of our cast,” adding that he could feel the loss in texts and emails exchanged among the group.

Norris also said he remains in contact with Bryan Cranston and Aaron Paul, who he expects will be at Comic-Con. He described the planned gathering as an opportunity for them to “hug each other over this great tragedy that happened.”

During the livestream, Norris urged anyone experiencing suicidal thoughts—or anyone concerned about another person—to reach out for assistance.

“Please, please, if you need help, or if you know anybody who needs help, talk to somebody,” he said. “There are suicide hotlines. There are all kinds of things. So please, please, please know that you can talk to somebody, okay?”

Anna Gunn Remembers Her “Beloved TV Son”

Gunn, who played Mitte’s on-screen mother Skyler White, released a statement Wednesday recalling their first meeting when he was 14.

“I was immediately struck by the depth and complexity of someone so young,” the Emmy winner said. She remembered Mitte as “gentle and bold, exceedingly kind and wickedly funny,” as well as eager to develop his craft.

Gunn praised Mitte’s determination not to let his disability impede him. Instead, she said, he used his performance as Walt “Flynn” Jr. to educate and enlighten others.

She also reflected on watching him develop both as an actor and as a person throughout the show’s seasons and in the years that followed. Gunn cited his advocacy and philanthropic work, saying she and the rest of the cast were proud of him.

“There truly are no words to express the heartbreak of a loss this profound, the loss of a beautiful young man who had such an impact upon this world, with still so much ahead of him,” Gunn said.

She added that she was holding onto their private memories together, including moments of support, laughter, silliness, care and love.

“You live in my heart forever, my dearest R.J.,” she concluded.

ShowBiz Take

The tributes from Norris and Gunn show how deeply Mitte’s death has affected the people who worked alongside him. Breaking Bad ended its five-season run in 2013, but its cast remained connected as the series built a large fan following. Norris’ comments about recent messages among the cast—and Gunn’s memories extending well beyond the production—place their grief within a relationship that continued after the show concluded.

The timing also made Norris’ livestream especially emotional. An appearance intended to look back at Breaking Bad became a public farewell to a colleague he had seen only weeks earlier, as well as an urgent appeal for people in crisis to seek help.

What Happens Next?

Norris said he is set to appear on Celebrity Wheel of Fortune this week and plans to donate to a charity dealing with suicide. He also intends to dedicate his book tour to Mitte.

Closing his livestream, Norris offered viewers a final message: “Cherish the ones you love, and you never know if it’s the last time you’re gonna see them.”

If you or someone you know is experiencing thoughts of suicide, call or text 988 in the U.S.