It was in 2011 when he first appeared, assisting Zack Ryder to win the US Championship against Dolph Ziggler.
Four years later, he returned, this time, alongside Ziggler, as he confronted Damien Sandow, who was dressed as Magneto (X-Men mutant).
Jackman, who portrayed Wolverine (X-Men mutant), took him out, along with his teammate.
The Terminator terminated Triple H
Arnold Schwarzenegger is undoubtedly one of the most loved celebrities. He made his presence felt in WWE when he first appeared in 1999.
While he assisted Stone Cold Steve Austin in a match against Triple H, the latter tried to attack him, as Schwarzenegger punched him out.
He also made an appearance in 2014, before being inducted into the Hall of Fame in 2015.
Kevin Federline takes it to John Cena
It was in 2006 when Kevin Federline, the ex-husband of Britney Spears, came to Raw to promote his album Playing with Fire.
However, in the process, he got into an altercation with then WWE Champion John Cena.
He even beat Cena in a no-disqualification match, thanks to some outside interference from Johnny Nitro and Umaga.
Meanwhile, WWE was heavily impressed with Federline's performance.
The Baywatch bombshell accompanies Diesel at WrestleMania 11
Now, this might sound interesting, but there was nothing exciting about it at all. Pamela Anderson accompanied Diesel during his World Heavyweight Championship match against Shawn Michaels at WrestleMania 11. She barely played any role, other than his partner, as he successfully defended his title.