The Biggest Loser winners What ever happened to the winners of "The Biggest Loser"? Take a look back with those who won the title of biggest loser since the NBC reality series aired in 2004. Photo: NBC/Biggest Loser

“The Biggest Loser” will be returning to NBC on Thursday, Sept. 11, for more jaw-dropping drama when the show airs it’s anticipate Season 16 premiere. And according to reports, the upcoming installment of the reality competition, titled “Glory Days,” will be the series’ fiercest as 20 competitive former athletes, including NFL players and Olympic gold medalists, fight for the title of biggest loser.

And while we’re looking forward to watching the drastic transformations of the Season 16 cast we can’t help but reminisce about the previous 15 winners who shocked the world with their eye-widening new physiques. Check out the winners of “The Biggest Loser” since the show first premiered in 2004 and take a peek at their tremendous slim downs:

Ryan Benson (Season 1): Ryan was the first winner of “The Biggest Loser.” He began the competition at 330 pounds and won after losing a staggering 122 pounds. However, since winning the title and cash prize Ryan has gained the weight back currently putting him around the 300 pound mark.

Matt and Suzy Hoover (Season 2): This dynamic duo lost a total of 252 pounds between the two of them. Although they have gained some of the weight back since “Biggest Loser” reports indicate that the fitness couple is still powering on through their weight loss journey.

Erik Chopin (Season 3): Erik won the Season 3 competition of “Biggest Loser” by losing 214 pounds. Since his appearance on the show he’s become a motivational speaker in addition to creating a one-hour documentary featured on Discovery Health Channel titled “Confessions of a Reality Show Loser.”

Bill Germanakos (Season 4): Bill lost 164 pounds on the NBC reality competition. Since the show ended the now spinning instructor gained back 37 pounds.

Ali Vincent (Season 5): Ali was the first female winner of “The Biggest Loser.” She lost over 112 pounds on the show and managed to maintain her new fitness lifestyle after the show ended. Her experience on “Biggest Loser” has helped Ali launch her career with a health book and fitness-based website.

Michelle Aguilar (Season 6): Michelle weighed in at 242 pounds at the beginning of Season 6 but by the time the show ended her scale read 132 pounds.

Helen Phillips (Season 7): Helen had one of the show’s wildest transformations. The contestants lost a whopping 140 pounds on the NBC reality series and now puts her fitness lifestyle to good use by working to end childhood obesity.

Danny Cahill (Season 8) : Danny lost 239 pounds during the eight season, which earned him the title of biggest loser. Now Danny, who weighs in at 215 pounds, is a motivational speaker and singer.

Michael Ventrella (Season 9): By the time “Biggest Loser’ premiered Michael was 526 pounds. However, during the show’s finale Michael weigh in at 262 pounds. He has since become a professional trainer and public speaker.

Patrick House (Season 10): Patrick began his journey on “Biggest Loser” weighing 400 pounds. But his hard work and determination helped he shed 181 pounds and gain the coveted title.

Olivia Ward (Season 11): Olivia dropped 132 pounds during her stint on “Biggest Loser.” She now appears regularly on the Dr. Drew Show as a weight loss guru.

John Rhode (Season 12): John was 445 pounds when he entered as a contestant on “The Biggest Loser.” But when hit NBC fitness journey came to an end he weighed in at 225 pounds.

Jeremy Britt (Season 13): Jeremy was 22-years-old and 389 pounds when he joined “Biggest Loser.” But by the end of the season he weighed 190 pounds.

Danni Allen (Season 14): Danni lost 131 pounds during her time on “Biggest Loser,” receiving a final weight of 137.

Rachel Frederickson (Season 15): Rachel is the show’s most controversial winner. She lost 60% of her body weight and 155 pounds. Some critics think Rachel looks too thin at her 105 pound frame.

‘The Biggest Loser’ Winners Rachel Frederickson won Season 15 of "The Biggest Loser." Photo: NBC

Who do you think had the wildest transformation? Sound off in the comments section below and don't forget to tune into Season 16 of "The Biggest Loser" when the new season airs Thursday, Sept. 11, at 8 p.m. EDT.