6 current WWE Superstars you forgot were in WCW

#3 The Undertaker

The Undertaker and Sting

The Undertaker will go down in history as one of the most important characters in pro wrestling, let alone WWE. The Phenom's gimmick has stood the test of time, and even after over 30 years in the business, he is still going strong.

Before he began his rise to the top in WWE, he was briefly a part of WCW, joining the promotion back in 1989. Wrestling under the ring name "Mean Mark" Callous, he debuted as a heel. He didn't last a long time with WCW though, as he was unhappy with contract talks with the company, where he was told that not many would want to watch him wrestle.

He had discussions with Vince McMahon and WWE and went on to sign with them in 1990. From then till now, The Undertaker has remained a loyal servant of the WWE, although he was close to re-joining his old promotion once. He stayed in the promotion despite most of the big names quitting WWE to join WCW and created an impressive legacy.