3 Biggest WWE Superstars who came from other companies, and 3 who were created in WWE itself

#1 Brock Lesnar (homegrown)

Brock Lesnar

Brock Lesnar was signed to a WWE contract in 2000, after which he spent 2 years in Ohio Valley Wrestling. He was moved to the main roster immediately after WrestleMania 18, and his intimidating form was enough to establish him as a top heel soon after. It didn't take long for Lesnar to become one of the hottest Superstars in all of WWE. He won the King of the Ring 2002 tournament and went on to defeat The Rock at SummerSlam 2002. Lesnar dominated SmackDown for the next two years, before making his exit.

Lesnar made it big in NJPW, and later UFC. By 2012, he had become a major mainstream star thanks to his UFC stint. WWE brought him back after an 8-year hiatus and pushed him more than ever this time around. He went on to defeat The Undertaker and break his WrestleMania streak in 2014 and squashed John Cena at SummerSlam that same year. Lesnar is one of the most dangerous entities in all of WWE, and still has a lot left in him at 43-years-old.