PewDiePie

10.1 billion total views
39.3 million total subscribers
Felix Arvid Ulf Kjelberg is a foul-mouthed Swedish video game commentator who has absolutely dominated YouTube over the past year. Kjelberg's videos show him playing various video games while a box in the top corner of the screen shows his reactions to what is happening. Kjelberg has broken numerous YouTube growth records, jumping from 12 million subscribers in August 2013 to more than 20 million in January. Many attribute his success to the attention he pays to his fans. Kjelberg spends lots of time talking about his fans, answering their questions in the YouTube comments section, and forming a community of "bros."