#1 Conor McGregor- 7.18 million followers
Finally, the undisputed King of Twitter is former Flyweight and Lightweight Champion, Conor McGregor.
The biggest draw in MMA history also has by far the largest following on the platform. A huge mainstream star, McGregor has been on the outside looking in with the UFC ever since departing the sport to fight Boxing legend, Floyd Mayweather Jr in 2017. At the time of writing, McGregor had expressed an interest in rekindling his UFC career.
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"Notorious" definitely lives up the nickname on Twitter as well as the Octagon, given some of his most recent tweets are photographs of him and controversial Russian President Vladimir Putin.