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

#4 Sting (became big elsewhere before making his way to WWE)

Sting

For a long time, Sting was the biggest Superstar to never have stepped foot in a WWE ring. He wrestled for a handful of promotions before making his debut in WCW in the mid-80s and was with the company until it was bought off in 2001. Sting was heavily featured as a babyface throughout his WCW stint and is a 6-time WCW World Champion. He wrestled a string of in-ring greats during his time in WCW and had legendary feuds with the likes of Vader, nWo, and many others.

Sting signed a contract with TNA in 2003, which lasted just over a decade. He won the TNA World title on four occasions and was inducted into the promotion's Hall of Fame in 2012. For years on end, the WWE Universe had clamored for a Sting vs The Undertaker match. Their hopes were raised when Sting made his WWE debut at Survivor Series 2014. He went on to lose to Triple H at WrestleMania 31, while The Undertaker put down Bray Wyatt at the same event. Sting then had a program with Seth Rollins, soon after which he had to call it quits due to suffering a neck injury during his match with the latter. Sting was inducted into the 2016 WWE Hall of Fame for his contributions towards the business.