#1 Chris Jericho - First Undisputed World Champion
Chris Jericho is perhaps the greatest entertainer to have ever stepped foot inside the ring. Jericho holds several records in professional pro-wrestling. He has held multiple Championships and has defeated wrestlers from across the globe.
Out of all his accomplishments and achievements that he has made in the WWE, the most important performance which made him an overnight sensation was winning the first ever undisputed WWF World Heavyweight Championship. It happened in the year 2001 at the Vengeance PPV. He won back to back Championship matches and grabbed both the Heavyweight titles.
At first, Jericho faced the Rock for the WCW World Championship. They both competed for nearly 20 minutes and in the end, Jericho defeated the Rock and won the title. Immediately, he faced Stone Cold for the WWF Championship. Jericho pinned Stone Cold despite interference from Kurt Angle, Booker T and others.
Thus, Jericho unified both titles and became the first ever dual World Champion in the WWE.