It doesn't matter how many times you've heard it before. When you hear the trademark gong of The Undertaker, it sends a shiver down your spine almost immediately. From the looks of it, The Undertaker will be heavily involved in the proceedings at SummerSlam. And that leads me to wonder who his SummerSlam opponent is.

In this article, I shall delve into five possible contenders. I urge you to do the same in the comments below. We're all speculating here, so your guess is just as good as mine, really.

However, I will try and justify why I've chosen the superstars that I have picked for this said list. I hope you're just as excited as I am to see the Dead Man in action yet again.

Here are my five picks for this speculative article...

#5 Roman Reigns

Roman Reigns is one of the two men to have defeated The Undertaker at WrestleMania during his career. When Brock Lesnar defeated The Undertaker, there were months of consequences from The Dead Man. And in this case, there has been nothing, really.

This is highly uncharacteristic of The Undertaker. A man who has suffered very few losses in his long and illustrious career, he does not like to lose. I can totally imagine a rematch with Roman Reigns at SummerSlam to determine which Big Dog owns the yard, whatever that truly means!

This time, The Undertaker could pick up a big win to set up a rubber match for Survivor Series. The Undertaker vs. Roman Reigns is a big match even if it's happening for the second time and not the first. This time, it's a newer, fitter Undertaker defending his yard.

#4 John Cena

Can we all agree that the match at WrestleMania was not the dream match we were waiting for? After years of anticipation for John Cena vs. The Undertaker, we finally got a squash match that ended almost as quickly as it began. I think there's bound to be a repeat down the road, for certain.

What better stage than SummerSlam for this epic rematch? If Cena's schedule allows him, he could come down and take on The Undertaker in a match that could actually live up to the expectations of fans. The two men could then engage in a battle worthy of being a dream match.

While neither man is in his prime, they're both masters of psychology. They can tell a fantastic story in the ring even without having to resort to flips and dives. Much like the Roman Reigns match, this could set up a rubber match at Survivor Series or WrestleMania.

#3 Drew McIntyre 

Everyone believes that it's only a matter of time before McIntyre turns on Ziggler and becomes the Intercontinental Champion, right? Great things are due for the man. McIntyre looks like a Greek God, can cut incredibly passionate promos and is a fantastic worker too. Some believe that he could even become the next face of WWE if things work out!

Let's say The Undertaker returns and announces that he wants to take on McIntyre for the Intercontinental Championship, as he's never won the title during his career. Win or lose, it will be a massive step up for Drew McIntyre.

#2 Brock Lesnar

The Universal Championship hasn't been seen on RAW for a long time. From the looks of it, it may be a while before we see it again. Paul Heyman recently revealed on Facebook that he believes that nobody in the roster is at Lesnar's level.

It is difficult to dispute that The Undertaker isn't. If The Undertaker challenges you to a match, you can pass him off as a nobody in WWE. Could The Undertaker become the next Universal Champion in his final run?

It would keep the Universal Championship off the show and let it remain a special attraction on RAW. I have a feeling that fans will be in favour of The Undertaker as champion in a feel-good moment because he's sure to do the honours for some young talent in due course of time.

#1 Braun Strowman

Braun Strowman is Mr. Money in the Bank. In all likelihood, he is a future WWE Universal Champion as well. He's achieved a lot in a short amount of time. A victory over The Undertaker would immediately launch him to the moon.

The Undertaker vs. Braun Strowman would keep the Monster occupied until he cashes in his contract somewhere down the line. It would sell tickets for sure. It would be a marquee match at a marquee event.

Whom would you like to see face The Undertaker? Sounds off in the comments.

Also, do you like to see The Undertaker still competing at this stage of his career?