The videos are just much slicker than those early homemade ones. While he’s not primarily a YouTuber anymore, his channel is still very active. Justin’s YouTube channel has since amassed 68 million subscribers and over 27 billion views. When an almost 13-year-old Justin Bieber’s mom posted videos of the Stratford, Ontario native singing, nobody could have dreamed where it would lead. While most of us know him solely as a music superstar now, Justin Bieber started his career on YouTube - and his channel is still a titan on the platform. Wealthy Gorilla estimates his net worth at $15 million. In addition to YouTube and music, he’s also an actor, has written two books, has been involved in creating video games, been a boxer and is co-owner of several companies. KSI was a member of British YouTube group Sidemen, too.

That channel has 14.8 million subscribers and over 3.3 billion views. In 2011, he started another YouTube channel under his real name, JJ Olatunji, posting mainly reaction videos. He now has two studio albums to his name, as well as a slew of singles and collaborations. At first he focused on commentary on the FIFA video games, but there were some comedy-rap songs too that helped kickstart his career as rapper. This channel now has 23.7 million subscribers and over 5.8 billion views. A year later he started a new channel under the name everyone would come to know him by: KSI.

When a 15-year-old British boy created a YouTube account in 2008 under the name JideJunior, there were hints at what the future held in store: Among the videos he posted was a rap about his chemistry homework.

Youtube red diamond award winners