If it weren't for Canadian wrestling icon, promoter and trainer Stu Hart, the professional wrestling business would look a lot different today. He opened up the Hart Dungeon in the family household, located in Calgary, Alberta. Stu went about training not only his own family members (including Bret and Owen Hart), but some of the other more beloved and well-known wrestlers in the WWE throughout the decades.

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Before we get to the top 10, these are honorable mentions that enjoyed excellent careers in the ring: The Honky Tonky Man, Christian, Mark Henry, Brian Pillman Ken Shamrock, Tyson Kidd and Nikolai Volkoff. Now, let's get to the list!

10 'Rowdy' Roddy Piper

From one Canadian icon to another, this Saskatoon, Saskatchewan native was trained in the Hart Dungeon. After his intense training and preparations, Roddy Piper emerged as one of the greatest heels in the history of professional wrestling.

Piper also engaged in a rivalry for the ages with Stu's son, Bret (in WWE And WCW), a fellow WWE Hall of Famer. Piper was named the "Best Heel" in 1984 and 1985 by the Wrestling Observer Newsletter, and he was a one-time Intercontinental Champion.

9 Jake "The Snake" Roberts

Like the aforementioned Roddy Piper, Jake "The Snake" Roberts was among WWE's top money draw bad guys in the '80s and '90s. Roberts freaked out the audience by bringing in large snakes (cobras and python), which he used to terrorize his opponents.

Roberts never won a championship belt in WWE, but he didn't need to. His persona and obsession with snakes got him over with the fans. He was inducted into the WWE Hall of Fame in 2014.

8  Jim Neidhart

The late Jim Neidhart was the brother-in-law of Bret Hart (he married The Hitman's sister, Elizabeth), and the father of Natalya, who was also came out of the Hart Family Dungeon. It should be noted that Natalya wasn't trained by Stu.

RELATED: 10 Best Members Of The Hart Foundation, Ranked

After learning the craft of wrestling from Stu, Neidhart joined the WWE in 1995 - and he was a key member of the legendary Hart Foundation stable - working with Bret, Danny Davis and Jimmy Hart (not part of the family). Neidhart and Bret won two Tag Team Championships together, and the former was inducted into the WWE Hall of Fame in 2019, several months after his unexpected passing.

7 Owen Hart

For what it's worth, Bret Hart said that his younger brother "trained in the (Hart) Dungeon, but not in the same way." But Stu and Owen's other trainers did more than enough to groom him into one of the most beloved superstars of all-time.

Like Bret, Owen displayed incredible athleticism and beautiful in-ring work. His storyline feud with The Hitman was one of WWE's best of the '90s. He was a two-time Intercontinental and four-time Tag Team Champion. It's been 20 years since Hart's tragic and untimely passing, and somehow, he still hasn't been inducted into the WWE Hall of Fame.

6 Superstar Billy Graham

Top 10 AWA stars who made it big in WWE, ranked

When Superstar Billy Graham came to learn the fundamentals of wrestling, Hart wasted no time learning. Bret even remarked that his father would tie Graham up "in knots, with Iron Sheik observing.

Graham became one of the biggest money draw wrestlers in the '70s and early '80s, thanks to the masterful training he received from Stu. He was a one-time World Heavyweight Champion in WWE, and Graham is also enshrined in the Hall of Fame.

5 The British Bulldog

The British Bulldog (Davey Both Smith) began training for wrestling in his native England, but he moved to Canada and began working in the Hart Dungeon. After a brief stint in New Japan Pro-Wrestling, he joined WWE with Bret Hart and Jim Neidhart in 1984. British Bulldog dazzled with his phenomenal in-ring work (like most who trained under Stu Hart).

He married Diana Hart, the sister of Bret and Owen, thus entering the legendary wrestling family. He won seven championships during his tenure with WWE. Smith sadly passed away at the age of 39 in 2002, leaving behind two children. His son, Davey Boy Smith Jr., is also a professional wrestler.

4 Fritz Von Erich

Fritz Von Erich had six children with his wife Doris. One of them tragically died in an accident at six years of age, while the other five all entered the professional wrestling business. Sadly, four of the five met shocking and untimely deaths.

RELATED: Every Bret Hart WrestleMania Match, Ranked

The legend of the Von Erich wrestling family started when Fritz began working with Stu Hart. He was an icon in the NWA, winning several championships (including 13 NWA American World Heavyweight titles). Like most others on this list, Von Erich earned a WWE Hall of Fame induction in 2009, 12 years after his death.

3 Edge

After a brief stint with WCW, Edge joined the WWE in 1996. He and real-life friend, Christian, both trained at the Hart Dungeon. Edge and Christian dominated the tag team division together, winning seven World Tag Team Championships together.

Edge eventually received a massive main event push, and he became one of the top main event heels in the Ruthless Aggression Era. The Rated-R Superstar won the inaugural Money in the Bank ladder match in 2005, as well as the 2010 Royal Rumble, and Edge retired as an 11-time World Champion.

2 Chris Jericho

Y2J claims that Stu Hart was close to 80 years of age when they encountered one another. And it certainly didn't take the latter long to turn Chris Jericho into a dynamic in-ring worker. Jericho worked for various promotions before landing with WCW in 1996.

However, his real break came in 1999, when Jericho joined WWE. He became one of the elite and most decorated superstars of the 2000s. The six-time World Champion is also a Triple Crown and Grand Slam Champion in WWE. He left the promotion in 2017 and is now one of the top main event superstars in the rival AEW promotion.

1 Bret Hart

Honestly, who else was going to be number one?

Bret Hart is the greatest and most accomplished wrestler to have come out of his father's iconic wrestling dungeon. Hart was among Vince McMahon's top money-making superstars in the '90s. His feuds with the likes of Owen Hart, Shawn Michaels and Steve Austin took the WWE to new heights in the '90s.

Hart wasn't only beloved North of the Border, he was just as popular in the United States. He was a five-time World Heavyweight Champion who earned a Hall of Fame induction in 2006.

NEXT: 5 Reasons NXT Has Been The Better Wednesday Night Show (& 5 Reasons Why AEW is Winning)