#1 Rob Van Dam
The Streak that nobody talks about is Rob Van Dam's. We all know of The Undertaker's streak, but RVD has the best-undefeated streak now at 4-0. RVD became well known as one of the most amazing wrestlers of the original ECW brand before coming to the WWE in 2001 during The Invasion.
During RVD's WWE career, he was a world champion twice (once each with the ECW and WWE Championships) to go with six WWE Intercontinental Championships and three total tag team championships.
RVD first defeated William Regal at WrestleMania X8 to win the WWE Intercontinental Championship. He also won the Money In The Bank Ladder Match at WrestleMania 22 defeating the likes of Bobby Lashley, Finlay, Matt Hardy, Ric Flair, and Shelton Benjamin.
RVD still wrestles today, so there is always the possibility that he could have one more WrestleMania moment.