#4 Gregory Shane Helms (Hurricane)
Although it is not widely known, Hurricane (Shane Helms) credits The Undertaker for moulding him into a real WWE Superstar. In past interviews, Shane has mentioned that The Undertaker was one of the first Superstars in the locker room who acknowledged his talent in the ring and took it upon himself to teach the young wrestler a few basic things that ended up helping Hurricane more that he realised; one of them being the right way to hold a championship.
Helms is regarded as the longest reigning WWE Cruiserweight Champion of all time, and the Superstar has confessed it would not have been possible without help from The Undertaker. Shane Helms left the WWE in 2010 and after a while in the indie circuit, joined Impact Wrestling soon after but recently announced that he is leaving the company after a long and fruitful run with them.