The Undertaker: The Last Ride series has proven to be unbelievably popular and the fourth chapter has finally dropped on the WWE Network. Fans have loved seeing this in-depth look at the Deadman, and the latest episode put a big focus on his match with Goldberg.

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That Saudi Arabia match was a major part of this episode alongside many other fantastic backstage details. The docu-series has continued to be one of the greatest things the WWE Network has ever produced, so it's time to take a look at 10 things fans learned from that.

10 Always Wear Black

An interesting note that was learned from this episode was just how serious The Undertaker took his gimmick throughout his career. The Deadman spoke about not giving interviews or having big appearances due to protecting the gimmick.

He took things so seriously that he would only ever wear black while out in public, in order to make sure that even his 'normal' clothes were somewhat linked to his gimmick. It's a crazy amount of dedication, but it's why his gimmick worked so well.

9 Backstage Fooling Around

When people think about The Undertaker, fans often think of the serious Deadman gimmick who never joked about. However, in this episode, WWE showed some footage from him filming segments with Paul Bearer where he would happily fool around.

There were tons of funny clips from the two of them just goofing around. It might not be groundbreaking news about him, but it was certainly great to see him in a totally different light.

8 Trying To Break His Character

Speaking of comedic clips and moments, there was also a really fun segment that saw different WWE Superstars talk about trying to make Undertaker break his character on-screen.

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It showed Kurt Angle kissing him and Booker T trying to make him do the spinaroonie, yet the Deadman never broke, not even once.

7 Experiencing WrestleMania As A Family

The WrestleMania 35 weekend was clearly a difficult one for The Undertaker, not being involved properly. However, it allowed him to enjoy the time with his wife and daughter and experience it as a family.

It showcased a different side of Undertaker and it was certainly something that fans have never seen before, basically viewing him in 'Dad mode.'

6 Goldberg Issues

Goldberg whips The Undertaker into the ropes

Everyone knows the match with Goldberg didn't go as planned. This episode covered that with The Undertaker revealing it was Triple H who offered the match to him. The Deadman thought it was a great idea, but admitted that his disappointed face after the match was over summed it up.

Michelle McCool spoke about how scared she was after this match, with Undertaker himself admitting he was seriously banged up after it. He had to really contemplate his future after this one, which proves just how problematic the issues were.

5 Watching WrestleMania 35

All the way in the build-up to WrestleMania 35, fans were wondering if The Undertaker would be added, but it never happened. He didn't appear at all, but he was backstage throughout the show, as this episode highlighted.

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It was interesting seeing him interacting with talent such as Brock Lesnar, but it was also sad to see just how much he clearly missed being out there. It was obvious he wanted to be part of the action, which is likely why he hasn't been able to call time on his career yet.

4 He Forgot His Ring Gear

While he wasn't involved in WrestleMania 35, Undertaker did appear the next night on Monday Night Raw for a segment with Elias. However, Undertaker revealed he was only booked for this segment on the Saturday of that WrestleMania weekend.

He had to literally fly home that night to Texas and back because he didn't have his ring gear. It was an amateur mistake on Undertaker's behalf and it was funny to see him and Vince McMahon arguing about it the next day. Vince blamed him for not taking his gear, calling him a rookie, while 'Taker called Vince a rookie for not booking him sooner.

3 He Considered Pulling Out Of Extreme Rules Tag Match

The match between The Undertaker and Goldberg was a disaster, which is something everyone involved has admitted. But it clearly rocked The Undertaker's confidence because he actually stated that he wanted to try to pull out of the Extreme Rules match.

Undertaker had already signed on for it prior to his bout with Goldberg, and after it went so poorly, he debated trying to get out of the match. Thankfully, that didn't happen though as that tag team match was superb.

2 He Was Going To Retire After Extreme Rules

Speaking of Extreme Rules, the tag team match he had that night was a fantastic bout that remains one of Undertaker's best in recent years. However, while the Deadman was proud of the match, the WWE cameras caught him talking to Vince McMahon directly after it.

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The Undertaker immediately told the WWE Chairman that he was "done," admitting that his body just wasn't there. While he ended up wrestling again after that match, it was certainly interesting to see him and Vince having a frank conversation about retiring after what was a very well-received match.

1 Starrcast Booking Drama

When the Starrcast convention announced that The Undertaker had been booked for its convention, a lot of eyebrows were raised. Seeing a top WWE Superstar associated with a convention that had links with AEW was something that nobody expected.

It was touched upon during this episode where Undertaker admitted that Vince McMahon wasn't happy with the situation. 'Taker revealed that the two men actually stopped talking for a little while due to this issue, but he did confirm they've patched things up.

NEXT: The Undertaker: The Last Ride: 10 Things We Learned From Episode Three