MrBeast is famous for his epic YouTube videos, which feature super-sized stunts, competitions, and giveaways. In 2017, one of his challenges went mega-viral after he posted a video of himself sitting in one place until he counted to 100,000—a feat that took him over 40 hours. Today, MrBeast is widely considered the content-creation king, with a subscriber base of more than 109 million and multiple YouTube channels to his name.