Aaron Paul has shared an emotional tribute to his late Breaking Bad co-star RJ Mitte, who he said reminded him of Superman because of his "kindness and strength".

The actor - who played Walter White Jr. in the beloved TV show - tragically died on Monday (12.10.26) after taking his own life at the age of 34.

Tributes have flooded in for RJ, who was open about his struggles with mental health and inspired others to look after themselves.

Aaron - who portrayed Jesse Pinkman in the crime drama - has hailed his castmate's death an "absolute tragic loss", while reminding people to always reach out for help when they are facing dark times.

The 47-year-old star shared one of RJ's video uploads about mental health, in which he said: "Hey everyone, I hope y'all are doing well today in this time of uncertainties. I would like to talk to you a little about mental health. "It's very important to take care of one's physical health, but it's equally as important to take care of one's mental health. More often than not, we hide that. We hide how we're truly feeling, what we're truly thinking - the 'OKs' and 'I'm fine' and 'I'm good'. But is that what you really are? Are you OK? Are you good? Not always, but it's OK to be not always good. It's not OK to harbour that feeling, harbour those emotions. So I'm hoping to inspire each and every one that sees this video today."

Aaron captioned the post with a tear‑jerking tribute: "You have always been an inspiration for so many. I am so sorry you were hurting, my friend. I wish we knew. You constantly had a smile on your face and you took every single challenge that was given to you with such confidence and grace. I met you when you were a little boy and watched you grow into a beautiful young man, taking on every challenge head on. The last time we saw each other I kept calling you Superman. You reminded me of him. You reminded me of him because you always led with kindness and strength." He went on: "You were born into a world with challenges, but you never let any of that stand in your way. "I'm so sorry, RJ. What an absolute tragic loss… I loved your laugh and how much fun you had riding the wave we were all blessed to be on with Breaking Bad. I hope whoever is reading this note that feels lost or sad or uncertain about the future, please say something. Life is so damn special."