John Cena made his WWE debut 14 years ago and quickly evolved into becoming the face of the franchise.

The "Cenation" leader had his first match with Kurt Angle, a highly-competitive bout that saw the Olympic hero win, on "SmackDown" back in 2002.

Cena has had many accolades bestowed upon him since that first night with the company, the most impressive of which is 15 runs as WWE World Heavyweight Champion.

Vince McMahon and Cena both commented on the milestone on Twitter on Monday:

Though Cena has seemingly done it all and is currently in a dream feud with AJ Styles, there are some matchups the WWE Universe has yet to see. Here are four dream opponents for the "Cenation" leader.

1) Hulk Hogan

Of course, this will likely never happen, but you can't make this list without including "The Hulkster." Hogan was the face of the WWE from the mid-1980s to the early-1990s, while Cena has been the WWE's cornerstone star for over a decade. Hogan was involved in a past vs. present match with The Rock, but never Cena. Given the WWE's stance toward Hogan after his racist remarks and the fact that he's 62, this one is highly unlikely.

2) 'Stone Cold' Steve Austin

Much like Hogan, Austin was the marquee name during the WWE's attitude era, but he never went head-to-head with Cena in the ring. Austin retired shortly after WrestleMania XIX, while Cena was still developing into his own and was relegated to a rap segment on the pre-show that year. Cena would make his WrestleMania debut the following year, while Austin remained inactive in the squared circle. If Austin were to come back for one more bout, a dream match against Cena would be epic.

3) Bill Goldberg

Goldberg had a pretty brief run in the WWE, but he was never able to work a full-on program with Cena. Given Goldberg's meteoric rise through the ranks of WCW during his 173-0 streak, he has a lot of similarities to Super Cena. Goldberg also is big in stature and would provide a legitimate opponent for the "Cenation" leader.

4) The Undertaker

These two crossed paths in Cena's early days, but they haven't clashed during the peak of Cena's prime. It appeared as though the WWE was poised to have Cena and the "Demon from Death Valley" battle at WrestleMania 32 back in April, but Cena missed the show (aside from a quick run-in) due to a shoulder injury and The Undertaker was thrust into an odd Hell in a Cell match with Shane McMahon. These two are poised to main event WrestleMania together someday before they call it a career.

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