NBC’s hit show The Biggest Loser is back this fall with some familiar faces and some brand new blood. This will be the first season with newcomer trainers Dolvett Quince and tennis pro and certified trainer Anna Kournikova. My favorite trainer Bob Harper still remains along with the adorable host Alison Sweeney.

This year, 15 contestants are competing in three teams divided up by age, hence the season’s titled, Battle of the Ages. The first team comprised of the under 30’s, the second team comprised of the 30 to 49 year olds and the final team comprised of the over 50’s. As you can see in the picture above, each contestant is wearing their age on their t-shirt.

In the first episode, the teams will pick their trainers in order of which they finish the first challenge. Will the winning team opt out for long time show favorite Bob or will they try something new in Dolvett or Anna? This season promises to be a good one with many tear-jerking stories and a good dose of drama. Check out the 15 contestants below. Season 12 of Biggest Loser begins September 20th on NBC. (Check local listings.)

Meet the cast of Biggest Loser Season 12 after the jump…