#1. Brock Lesnar - One of WWE's last megastars
Brock Lesnar was only in WWE for two years at first, but he was given a massive push right from the get-go. By the time he finished his two-year stint, he already had multiple WWE Championships and a WrestleMania main event to his name as well.
But it was his stint with the UFC that made him a megastar. While he was a box office draw in the UFC due to his WWE days, his instant success and Heavyweight Championship victory made him a megastar.
A top AEW star just called one of his colleagues 'spoiled' and 'narcissistic' HERE.
He returned to WWE following his first retirement from MMA, and he was bigger than ever before. He managed to negotiate a great part-time contract with WWE and has often used UFC against them to get a more favorable contract.
Brock Lesnar's success outside of WWE made him one of the company's last megastars, and it's not surprising that Vince McMahon holds him in such high regard.
UFC President Dana White even stated that he couldn't compete with Vince McMahon, who reportedly "threw the vault" at Brock Lesnar to secure him to a contract.