Ruben Doblas "El Rubius" Gundersen is a name unfamiliar to most Americans. With more than 31 million subscribers on YouTube, however, he is a bona fide influencer in the video game industry. By the age of 28, El Rubius has cultivated an enormous fan base by combining playthroughs of his favorite video games with his energetic personality and inimitable charisma. Video game culture is now mainstream culture, and huge YouTubers like El Rubius are making...