WWE's YouTube channel has become the go-to place for Roman Reigns fans. With a high volume of content available on the WWE Network, TV and (to a lesser extent) pay-per-view, WWE's YouTube channel is an afterthought to many. According to WWE Corporate, in 2015, "WWE content garnered more than 8 billion views on YouTube; WWE was the most followed sports channel on YouTube and the second most followed sports brand on Facebook." In the first quarter of 2016, WWE reached 11 million subscribers for its YouTube channel, a number that currently sits at more than 14.5 million. According to WWE's investor presentation, "WWE content consumed on social and digital platforms increased 56% to 15B+ video views" in 2016, but Reigns was, far and away, the company's most appealing YouTube star.
Source: Forbes February 23, 2017 14:03 UTC