#1. John Cena
The WWE Universe might not believe it, but John Cena is not a Grand Slam Champion.
The Leader of the Cenation has won many titles since his debut on SmackDown in 2002. He is now a 16-time World Champion, five-time United States Champion, and four-time Tag Team Champion.
Despite all his achievements and being WWE's top guy for over a decade, one title is still missing from Cena's accolades, the Intercontinental Championship.
The 44-year-old has had a couple of shots at the Intercontinental Championship over the years. His first title match came against Bad News Barrett during WWE's 2015 tour in Abu Dhabi. Although Cena won the match by disqualification, he did not capture the championship.
Nearly two years later, the 16-time World Champion challenged then-Intercontinental Champion Roman Reigns for the title at the WWE MSG Show. The Tribal Chief pinned Cena to retain his title.
Cena and Reigns will square off again in a few days at SummerSlam. Cena recently returned to WWE after a long absence to challenge The Head of the Table for the Universal Championship.