Felix Arvid Ulf Kjellberg was born on October 24, 1989, in Gothenburg, Sweden. His mother and father, Johanna and Ulf, are both successful chief executives. As a child, he enjoyed art and playing on his Super Nintendo; his obsession with video games grew during adolescence, during which he spent a lot of time gaming in his bedroom, or at internet cafes. “Sweden has a great culture around gaming,” he told Rolling Stone magazine in 2015. “We’re really nerdy people.” During his last year of high school, he bought a computer with money he made selling artwork through his grandmother’s gallery. He set up his first YouTube channel, PewDie, in 2006 — “pew”...