Stefan Karl Stefánsson (aka Robbie Rotten) was an amazing man who inspired millions in his meme song "we are number 1". Many memers made parodies of this and started many YouTube careers like Grandayy. Stefan was a kind man who had a normal life off of the camera. Sadly, he was diagnosed with bile duct cancer and passed away August 21, 2018. In honor of his life, there should be an international holiday on the 21st of August!