The 23-year-old social media first shot to fame when he garnered a huge following on Vine, before later moving to YouTube, where he has amassed over 3.9 billion views.
Last night, he took on KSO, real name Olatunji Olajide, in a six-round bout at Manchester Arena, with 800,000 people tuning in to watch the live stream on YouTube.
Logan Paul net worth: How much is YouTube star worth?
According to Wealthy Gorilla, Logan is worth a staggering $6 million (£4.66 million).
Forbes report the internet star earns £117,000 per Facebook post, as well as £62,000 for sponsored Instagram content.
Who is Logan Paul?
Logan was born in Westlake, Ohio, and went on to attend Westlake High School, where he excelled in sports.
He later qualified for state-level wrestling and dropped out of college in 2014 to focus on his social media career, having built up a huge fan base online.
Logan is the older brother of fellow YouTube star Jake Paul, 21.
Aside from his social media fame, he has also appeared in several TV shows, including Law and Order: Special Victims Unit and The Thinning.
What happened in the fight between KSI and Logan Paul?
The fight came about after two other social media says, Joe Weller and Thea Baker, AKA Malfoy, went head-to-head in the ring last year, with KSI, 25, saying he would take on the winner.
He later went up against Joe at the Copper Box Arena in London in February, with 1.8 million people watching live via a free live stream on YouTube.
When he accepted his belt after the fight, KSI called out the Paul brothers, inviting them to come and challenge him for it.
British star KSI, who boasts 18.4 million subscribers on YouTube, took on Logan last night after several weeks of publicised to-and-fro drama, including many ‘diss’ videos.
Logan had the upper hand for the first two rounds, but KSI clawed it back as the fight went on.
When the judges scored it a draw, both stars were unsatisfied with the outcome and promised a rematch.
“I think there’s only one thing to do,” KSI said. “I think we have to have a rematch. Let’s do it. That was fun.”
“I think it’s what people want,” Logan agreed.
“Let’s give them a rematch.”
When will KSI vs Logan Paul rematch take place?
No date has officially been released for the rematch, but last night’s fight was only the first of two bouts, with the second rumoured to be taking place in the US.