Signed from New Japan Pro Wrestling in 2016, he debuted in the Royal Rumble, squaring off with Roman Reigns and allowing the world to see The Phenomenal One for who he really is.
Since then, he has been nothing short of incredible, and has been pushed to the moon.
Following his move, he has held the WWE Championship twice, the WWE United States Championship three times and is the current holder of the WWE Intercontinental Championship.
He is a main eventer, a talent unlike any other in the company, who can have genuinely amazing matches with pretty much anyone.
His trilogy with John Cena, for example, produced three absolute classics.
He is ageing, though, and turned 43 last month.
There could be the opportunity to move away from the company in the coming years, and he has been quizzed on the possibility of joining All Elite Wrestling.
Of course, Styles has history with plenty of AEW stars, leading the Bullet Club in NJPW and previously working with the likes of the Young Bucks and Kenny Omega.
A reunion could have been on the cards, then, and Styles has not ruled out the possibility of switching companies.
Speaking on his Twitch stream, as transcribed by Wrestlinginc, he said: “As far as AEW is concerned, never say never, right?
“But I think once my career is done, I’m hopefully just going to work for WWE in some capacity.
“What would I do? I’d like to be a recruiter, go scout some guys. I think that would be fun. I would have no problem going to the indies.
“I know we have scouts going to weightlifting contests and what not to get these big guys.”
He has confirmed that, in an ideal world, he would like to transition into a backstage role, but again stopped short of ruling out an eventual move to AEW.
He added: “I want to get guys and girls who have wanted to do this their whole life, give them some advice, check up on them from time to time, and help them get to the next level or the Performance Center.
“A lot of my friends are [in AEW], guys I love, but I know what I’m doing in WWE. I know what’s asked of me and I kind of like that.
“Change always – some change sucks. You know how one thing is done and the other is not worth the hassle.
“I don’t need, at least right now, to go anywhere else. So, why would I? But again, never say never.”
This seems like a fairly switched-on assessment from Styles, who clearly believes his role in WWE is well defined.
However, should AEW come knocking with a mega-money offer, who knows if he’ll turn it down?