RJ Mitte, who portrayed Walter White Jr. in the acclaimed series "Breaking Bad," died by suicide on October 12 at his home in Brownsville, Texas. He was 34 years old. His death has left his mother, Dyna, and his sister, Lacianne Carriere, devastated.

Carriere recently shared a heartfelt tribute to her brother on Instagram, accompanied by a series of throwback photos. "There are just no words," she wrote. "You were just here. Your strawberry Fanta was still sitting on my coffee table when I got the call. Life hasn’t felt real since then."

She described Mitte as a father figure, stating, "RJ, you were my everything. I just lost my other half. I lost my brother but I also lost my father." Carriere attributed many aspects of her own identity to her brother's influence, including her taste in music, film, and video games. "Every single aspect of my personality is because of your influence," she added.

At Mitte's memorial service on October 16, Carriere delivered an emotional eulogy, breaking down in tears as she spoke about their bond. She revealed that Mitte had taken on a fatherly role after their mother was paralyzed in an accident when Carriere was just two weeks old. "My brother immediately took on the father role," Carriere said. "I don't have many words that I can put together but all I can say is that every part of me is RJ."

Mitte, who was diagnosed with cerebral palsy around age three, played the son of Bryan Cranston's character in "Breaking Bad." Cranston, who played Walter White Sr., expressed his deep despair over Mitte's death in an Instagram post.

"I met him when he was only 14 years old when he was cast as Walter White Jr., a part he played with such joy and enthusiasm," Cranston wrote. "Born with cerebral palsy, he never - ever - allowed that challenge to be an excuse for anything. He met the demanding shooting schedule head on with great determination."

Cranston also shared that he and Mitte were in touch just weeks before his death, making plans for lunch. "All that promise and potential now is such a loss. It is especially devastating to hear that he took his own life," Cranston reflected. "Why? We were texting each other just a few weeks ago - figuring out when we could 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."

Mitte's mother, Dyna, told The Hollywood Reporter that "there were concerns" about her son's mental health and that she had encouraged him to seek professional help. "It was more about the conversations we were having - not just with me, but with his team and friends," she said. "There were concerns. That's why I encouraged him to talk to a counsellor. I told him to talk to a therapist and share his feelings and how he saw things."

Carriere concluded her tribute by promising to carry her brother's love forward. "I know you're telling me right now that I'll be okay though I don't know how I will. But I promise I'm going to do my hardest and I promise your love will always live through me until the day I see you again." She added, "I loved you completely. And you loved me the same. That's all. The rest is confetti."