Stefan Karl Stefansson, better known playing Robbie Rotten in the Icelandic-American Children's Program Lazytown, passed away at the age of 43 on Tuesday, August 21st, 2018. Stefán Karl announced in October 2016 that he had been diagnosed with cholangiocarcinoma. a GoFundMe campaign was subsequently created by LazyTown head writer Mark Valenti to pay his living costs when he became too ill to work. The campaign was popularized by various YouTube users uploading parodies of Stefán Karl's work, which led to the songs "We Are Number One" and "The Mine Song" from LazyTown becoming an Internet meme. In August 2017, Stefán Karl stated he was in remission. He clarified on his GoFundMe campaign that while his metastases had been removed after successful liver surgery in June 2017, he still had the disease and had refused further adjuvant therapy. In March 2018, Stefán Karl was diagnosed with inoperable cholangiocarcinoma, and said that he was undergoing chemotherapy to prolong his life. In April 2018, he announced that he personally chose to discontinue chemotherapy, and proceeded to shut down all his social media accounts. He died on 21 August 2018 at the age of 43 His wife stated that "Per Stefan's wishes, there will be no funeral. His earthly remains will be scattered in secrecy in a distant ocean."