He is also a two-time Intercontinental Champion and a 2010 Money in the Bank winner, as well as the third man to win WWE's Grand Slam.
In September 1996, play-by-play announcer Jim Ross introduced Jacobs as Diesel, and Rick Bognar as Razor Ramon, as part of a heavily criticized storyline mocking the departure of former employees Kevin Nash and Scott Hall respectively, while attempting to portray Ross as a disgruntled employee.
The pair competed primarily as a tag team, losing a WWF Tag Team Championship match to titleholders Owen Hart and The British Bulldog at December's In Your House 12: It's Time.
At that month's Summer Slam event, Yankem was disqualified when he hung Hart by twisting him in the top and middle ropes by his neck.
He lost to Hart in a steel cage match in the main event of the October 16 episode of Raw, and finally in a tag team match against Hart and Hakushi, in which he was partnered with Lawler, on the November 6 episode of the show.
Jacobs made his re-debut as Kane at Badd Blood: In Your House on October 5, 1997, by using The Undertaker's signature Tombstone Piledriver to cost him the victory in the first Hell in a Cell match against Shawn Michaels.
In keeping with the notion that Kane had been scarred by the fire – and to conceal Jacobs's identity – the character wore a mask, sported long hair, and wore red and black ring attire that almost covered his entire body.
On the May 12 episode of Raw, Mankind reintroduced Bearer, whose face was heavily bandaged due to the burns The Undertaker had inflicted.
The injury prompted Bearer to attempt to reunite with Undertaker after a long period of mutual hostility, using the ultimatum of revealing The Undertaker's "biggest secret".
In weeks prior on Raw, Kane had randomly attacked other wrestlers including Ahmed Johnson, Road Warrior Hawk, The Hardy Boyz, Flash Funk, Crush and Cactus Jack/Mankind's alter ego, Dude Love.
The Undertaker initially refused to face him, saying he would not fight his own "flesh and blood".
Jacobs also worked for Pro Wrestling Fujiwara Gumi under his real name.