WATCH: Wrestling Legend Jeff Hardy Makes AEW Debut

One of the most popular stars in professional wrestling history made his All Elite Wrestling debut on Wednesday's (March 9) episode of Dynamite.

Former WWE Champion Jeff Hardy made a surprise save to help his brother Matt Hardy, Sting and Darby Allin during an attack by the A.H.F.O., which voted Matt out of the group prior to the beatdown.

Hardy ran out to his and Matt's 'Loaded' theme song previously used during their legendary WWE run to make the save and eventually hit his finisher, the Swanton Bomb, on The Blade.

CEO, President, General Manager and Head of Creative Tony Khan officially confirmed Hardy was "ALL Elite" in a post shared on his verified Twitter account shortly after Hardy's debut.

Hardy was released from his WWE contract in December and faced a 90-day non-compete clause before being able to sign with another televised wrestling company.

Wrestling Observer Newsletter's Dave Meltzer reported Hardy was ordered and refused to attend rehab following an incident at a WWE house show on December 4.

Hardy was reportedly aware that he'd be punished in some way if he refused to attend rehab, which eventually resulted in his release, according to Meltzer.

On December 9, Fightful.com initially reported WWE released Hardy after offering "help and rehab," which "was not accepted."

Hardy's wife, Beth, denied the initial reports on Thursday (December 9) via Twitter.

"Jeff is good. We are good. Post that you 'heard' that. Thanks," Beth Hardy tweeted, which was later retweeted by her husband.

Hardy was reportedly sent home from WWE's touring schedule and absent from a live event in Corpus Christi, Texas on December 5.

The former World champion's last appearance came in a tag-team match alongside Drew McIntyre and King Xavier Woods during a WWE live event on December 4 when he disappeared from ringside during the match after tagging out.

Hardy was replaced by Rey Mysterio in McIntyre and Woods' six-man tag team match against WWE Universal Champion Roman Reigns and The Usos (Jimmy and Jey Uso) the following night.

Matt Hardy had previously confirmed he spoke with his brother days after reports of Jeff's absence from WWE's event on Sunday.

"I did speak to Jeff for a little bit today. He's okay. He's good," Matt Hardy said on his Twitch account via Fightful in December. "I think he'll be fine. once again, this isn't my business. If he wants to go into it with more detail, he'll do it himself. Jeff is okay. He is at home and okay. It's not my business or story to tell or explain. Besides that, it's not my story to tell because it's not my perspective. I love my brother and I want him to be okay and healthy."

Jeff and Matt Hardy, wrestling under the "Hardy Boyz" moniker, are regarded as one of the greatest tag-teams in pro wrestling history, while both have also etched singles legacies in numerous companies, most notably WWE, as well as IMPACT Wrestling and Ring of Honor.

Jeff Hardy is a three-time WWE World champion, a five-time Intercontinental champion and an eight-time tag-team champion, having also held numerous other titles for the company.