The Undertaker is, without doubt, one of the best characters that WWE has ever created.

He's been involved in some of the best storylines ever too, which his feuds with Kane and Shawn Michaels going down as some of the best in WWE history.

However, spanning his 30-year career, WWE pitched several ideas for him that never actually made it to TV.

Freddie Prinze Jr, who used to work for WWE as a writer, has revealed what one of those insane plans was.

The actor explained that there was a plan to debut Hade Vansen as The Undertaker's son back in 2008, 18 years after his WWE debut.

The storyline didn't make it to TV, with Freddie going into the story on his Wrestling With Freddie podcast last month.

I don’t remember who said it, but one of us said, ‘What if he claimed The Undertaker was his father?’ Somebody else said, ‘I don’t think anyone will buy that but maybe it could be like in a supernatural sense.

Freddie explained that the story did make it to TV, with segments and video packages airing on SmackDown.

"We get the story approved by Freebird, and then we get it approved by Vince. We start shooting these little segments and they’re airing on television. It’s an ongoing thing. He’s not calling out The Undertaker, but he’s speaking about The Undertaker, and you’re just waiting to figure out what the reason for it is. It was this father-son thing. So we’re building up, I think we get two weeks of TV out of it."

The storyline didn't ultimately go ahead though, and there's a reason for that, as Triple H apparently didn't like it.

Prinze Jr also explained what HHH's issues with the proposed angle were, stating that he didn't like Vansen's look:

“All of a sudden out of nowhere, Hunter says ‘Are we seriously going with this guy?’ Remember, this is not a Pay-Per-View match. This is not a guy that would get any sort of offense on The Undertaker. It would be just a build up for The Undertaker to have something to do so he could smash this guy and then get rolling over to Edge. He says, ‘Are we really going to go with this guy?’ Vince goes, ‘What do you mean? What’s the problem?’ He says, ‘He looks like he cuts my grass, man’, and Vince laughed.”

Hade wouldn't last much longer in WWE, getting released by the company in January 2009, but imagine what could have happened if the storyline for him to be The Undertaker's son did go ahead.