Robbie Rotten is the main antagonist of the show LazyTown. He is fond of using disguises and other tricks to stop the protagonists from being active and playful. Ironically, the effort he puts into his schemes make him one of the town's most active residents.
In October 2016, Stefán Karl Stefánsson (Robbie's actor) was diagnosed with pancreatic cancer. He created a Gofundme page to let people donate to him, causing the song "We Are Number One" to go viral on the internet and achieve meme status. He passed away on August 21, 2018 at the age of 43.