Icelandic actor Stefan Karl Stefansson, who will be most fondly remembered for playing the main baddie Robbie Rotten in the kids TV show LazyTown, has passed away at the shockingly young age of 43.

Stefan Karl Stefansson suffered with bile duct cancer. He regularly discussed his battle with cancer on social media, but delated his Twitter account shortly before his demise.

Back in March, Stefan Karl Stefansson said: "It’s not until they tell you you’re going to die soon that you realize how short life is. Time is the most valuable thing in life because it never comes back. And whether you spend it in the arms of a loved one or alone in a prison cell, life is what you make of it. Dream big."

Based in LA, Stefan Karl Stefansson was best known for playing the villain Robbie Rotten in the iconic children's show Lazytown between 2004 and 2007 and then when it returned to the air between 2013 to 2014. He didn't known any English when he first got the gig but quickly became fluent.

After it was discovered earlier this year that he was losing his battle with cancer, Stefan Karl Stefansson's wife, Steinunn Ólína Þorsteinsdóttir, with whom he had four children, made the following statement on social media: "Even though I knew for a long time that this day would come, it's a difficult turning point.

"There is no cure for this. Now he will have to undergo chemotherapy to try to prolong his life and we hope that this will go as well is possibly can, to improve how he feels and to prolong his life."

She added: "His illness has had an impact on the whole family, naturally. Some days we feel very low, some days we are happy and are happy about all that we have accomplished together and lived together. Nobody can take that away from us, however this goes. Not even death itself."

R.I.P.