NBC has announced the cast for The Biggest Loser's twelfth season and revealed the contestants will compete in teams divided by age.

The twelfth season of The Biggest Loser, which will premiere Tuesday, September 20 at 8PM ET/PT, will feature 15 contestants training with new trainers Anna Kournikova and Dolvett Quince and veteran trainer Bob Harper and competing in a "Battle of the Ages" format in which the contestants will be grouped by age for the first time in the show's history.

The contestants will be divided into three teams of five members. The youngest team will feature players whose ages range from 24-30, the second team will consist of contestants ages 30-49, and the oldest team will be comprised of players 50-65 years of age.

The show's premiere episode will feature The Biggest Loser host Alison Sweeney explaining to the contestants they must make their first game-changing decision. Each team will be required to choose their trainer based on the order in which they finish the season's first challenge. 

The Biggest Loser's twelfth-season contestants competing for the $250,000 grand prize are as follows:

- Rebecca "Becky" Comet, a 51-year-old math teacher from Benton, AR

- Mike Danley, a 62-year-old high school teacher and football coach from Spencerville, IN

- Antone Davis, a 44-year-old restaurant manager and former NFL player from Knoxville, TN

- Patrick Ferrari, a 26-year-old mental health adult foster care worker from Albany, OR

- John "Johnny" Forger, a 65-year-old realty company owner from Canton, MA

- Bonnie Griffin, a 63-year-old retired payroll supervisor from Picayune, MS

- Vencent "Vinny" Hickerson, a 27-year-old songwriter and entertainer from Nashville, TN

- Jessica Limpert, a 26-year-old travel nurse from San Francisco, CA

- Deborah "Debbie" Lounds, a 60-year-old senior administrative assistant from Ann Arbor, MI

- Ramon Medeiros, a 27-year-old tattoo artist from Florence, CO

- Joe Mitchell, a 46-year-old home health therapist from Knoxville, TN

- Courtney Rainville, a 24-year-old internet marketing specialist from Scottsdale, AZ

- John Rhode, a 40-year-old special education teacher and football coach from Mesa, AZ

- Jennifer Rumple, a 39-year-old television producer from Alameda, CA

- Sunny Sinclair, a 41-year-old fifth grade teacher from Frisco, TX