Dwayne "The Rock" Johnson
After dabbling in American football, The Rock decided to follow in the footsteps of his grandfather, Peter Maivia, and his old man Rocky Johnson, to become the first ever third-generation wrestling superstar.
Signature Wrestling Move: The People's Elbow : a high-impact drop with an elbow-jab in the ribs. Yowza!
Signature Movie Move: He kicks a lot of butt as Mathayus in The Scorpion King (2002).
Although, Mathayus gets to use a big ol' sword, and it's unlikely that they're allowed in the ring.
Born Terry Gene Bollea (cripes) in 1953, Hulk rose to fame in the '80s and was a household name by the mid-'90s.
As well as his wrestling and acting, Hulk also released an album, "Hulk Rules", which included the moving "Hulkster In Heaven" (WELL worth a listen).
Signature Wrestling Move: Big Boot : Hulk would raise his leg as his opponent charged into him. Boot would meet head, and opponent would end up on the floor.
Signature Movie Move: He's got some pretty sweet moves in that tutu in Mr Nanny (1993). Though he should really keep his back straight.
Cena only started professional wrestling in 2000, but has come a long way in those 9 years.
Not only does he do acting, but he does rapping too! His 2005 album "You Can't See Me" - his well-known catch phrase - peaked at an incredible #103 in the UK albums chart.
It must have been wicked .
Signature Wrestling Move: Attitude Adjustment or F-U : The opponent is given a fireman's lift into a powerslam. Boom!
Signature Movie Move: Cena starred in The Marine (2006), though it wasn't a very good move - it was a box-office flop.
Jesse "The Body" Ventura
Also known as "The Governing Body", "The Great", "The Star" and "The Mind", Jesse Ventura has a good few strings to his bow. Apart from the usual wrestling/acting combo, Ventura has also been a politician, Navy SEAL and talk-show host.
Not bad for a man who jumps on other men while dressed in lycra.
Signature Wrestling Move: The Body Breaker , which is just as brutal as it sounds.
Signature Movie Move: There's a bit in The Running Man (1987) where Ventura's Captain Freedom stars in fitness video commercial. It's wonderful.
The name comes from his former ring name, Hunter Hearst Helmsley - though his real name is Paul.
Paul's wrestling inspiration came from another of our 12 wildest - Ric Flair - his favourite wrestler as a teenager.
After having a go at bodybuilding, Paul set his sights firmly on wrestling. His parents must have been so proud the day he made that career choice.
Signature Wrestling Move: the Pedigree : also known as the Double Underhook Facebuster, it involves putting the opponent's head between your legs and hurting it.
Signature Movie Move: Triple H had a go at acting in Blade: Trinity (2004). It wasn't exactly memorable.
"Stone Cold" Steve Austin
The Six Million Dollar Wrestler started wrestling after seeing an ad for a wrestling school. At the time, he was working in Dallas, Texas, as a dockworker.
Only a couple of years later, he was a wrestling sensation.
Signature Wrestling Move: Originally dubbed "Stunning" Steve Austin, his moves have a stun-orientated theme. Stone Cold Stunner is perhaps his best-known, which includes a kick in the guts and a facelock jawbreaker.
Signature Movie Move: He starred alongside Vinnie Jones in 2007's The Condemned . Crème de la crème.
Better known to his parents as Glenn Jacobs, Kane has been wrestling since 1992.
In the ring, he's known as the (fictional) half-brother of The Undertaker, and together they join forces as the Brothers of Destruction. And they're soil-yourself scary.
Signature Wrestling Move: It's his finishing move, the Chokeslam From Hell , in which he lifts people up by their throats. With one hand. Jolly impressive.
Signature Movie Move: He played a psycho in See No Evil (2006), where he's pretty mean with an axe.
Andr "The Giant"
French wrestler André René Roussimoff was born with a syndrome called acromagaly , which causes excessive growth in the limbs. He was known for his gigantic size, unmatched in the ring.
He was said to be able to consume ridiculous amounts of alcohol - up to 157 beers in one sitting. Imagine trying to carry him home after a night out.
Signature Wrestling Move: At 7'4'' and weighing around 38st 8lb, he could take his pick.
Signature Movie Move: The Princess Bride (1987) - his performance as Fezzik is surprisingly gentle. André was a real-life BFG.
"Macho Man" Randy Savage
Six-time world champion Randy Savage was best known for his flamboyant dress sense and gravelly voice.
And if fans weren't charmed by his husky drawl and mental sunglasses, they would've been bowled over by the way he constantly humiliated and undermined his wife and manager Miss Elizabeth. Ooh yeah!
Signature Wrestling Move: The Diving Elbow Drop . Yes, it's exactly what you're picturing right now.
Signature Movie Move: Macho-Man had a bit-part in Spider-Man (2002) as "Bonesaw McGraw", a name that's definitely worthy of the real-life ring.
Perhaps one of the more successful wrestler-actor transitions, Lenny Montana wrestled in the carnival circuit throughout the 1950s.
He was a real-life meanie, an ex-con who had been bodyguard to the notorious Colombo family in the late '60s.
Signature Wrestling Move: Montana wrestled in a simpler age, before all the popcorn and fireworks kicked in. Though you can bet your bottom dollar his moves would have involved breaking bones.
Signature Movie Move: He landed the part of Luca in The Godfather (1972) whilst working for the Colombo family. It was as if the part was written for him.
Another American-football-player-turned-wrestler, Goldberg didn't start wrestling until he was 31 (and presumably, too old to run around a field any more).
He also tried his hand at martial-arts commentary (oddly enough), but decided he should stick to what he's good at - throwing people onto the floor.
Signature Wrestling Move: Goldberg's Jackhammer includes a tight-hoisting move, which could result in horrific wedgies.
Signature Movie Move: Wrestler or not, we don't think there's any excusing 2003's Looney Tunes: Back In Action .
2008 was a sad year for wrestling. For, at last year's Wrestlemania (XXIV), Ric "The Nature Boy" Flair threw in the final towel after a 36-year wrestling career.
One of the most well-known professional wrestlers of all time, Richard Morgan Fliehr was a rule-breaker, and a scallywag in the ring. He's a living legend.
Signature Wrestling Move: The crowd would shout, "wooo" as he delivered his signature Knife Chop .
Signature Movie Move: OK, so his acting career was almost exclusively limited to the Command & Conquer Video-Game franchise, but we won't hold that against him.
The wrestle-tastic 12 Rounds is available to buy on Blu-ray and DVD on 12 October courtesy of Twentieth Century Fox Home Entertainment