Mitchell Haaseth/NBC
December 15, 2009 12:00 AM

Last Tuesday, Danny Cahill became the biggest Biggest Loser ever when he dropped 239 lbs. in 7 months to win the eighth season title. Now, as NBC goes back to a couples edition of the series, the contestants and the challenges they face get bigger as well.

On Jan. 5, The Biggest Loser: Couples premieres with 11 teams of two competing for the Season 9 crown. Among the players are Michael Ventrella, a 30-year-old deejay from Chicago, who at 526 lbs. becomes the heaviest contestant ever on the series, and his is mother, Maria, a 51-year-old corporate travel agent.

“I would do anything for Michael,” his mom Maria, who starts at 281 lbs., tells PEOPLE. “At first I didn’t think I could do it because I have too many responsibilities at home. I have a husband who is disabled, my mom in a wheelchair, a full-time job, home cleaning — it’s a lot. But then he needed it so bad and so I am here, and I need it for myself, too!”

The Ventrellas are one of eight parent-child duos on the show this season.

Attorney Melissa Morgan, 39, and her husband Lance, 38, a rancher, hail from Aspermont, Texas, and are both interested in losing weight and saving their marriage.

California-based cousins Sam Poueu, 24, and Koli Palu, 29, were inspired by the success of Tongan cousins Sione and Filipe in Season 7 and hope to do the same for the and culture of American Samoa.

Orlando, Fla., identical twins James and John Crutchfield, 30, weighed in at a combined 969 lbs. “I’m glad I’m here,” says James, “because my only other alternative is surgery.”

Here are the other teams vying for a $250,000 winner prize or $100,000 at-home prize:

Mom Patti Anderson, 55, a business owner, and daughter Stephanie Anderson, 29, a radio sales executive, from Lafayette and West Hollywood, Calif.

Mom Cherita Andrews a 50-year-old homemaker and daughter Vicky Andrews, a 22-year-old student from Houston, Texas.

Mom Miggy Cancel, 48, a Pemberton, N.J. chef and daughter Migdalia Sebren, 28, a homemaker from Sanford, N.C.

Mom Cheryl George a 50-year-old store-owner and son, Daris George, 25, a salesman, from Ardmore, Okla.

Father O’Neal Hampton, Jr., a U.S. Postal Service station manager, 51, and daughter SunShine Hampton, 24, a restaurant server, from Minneapolis, Minn.

Father Darrell Hough, a press operator and mechanic, 46, and daughter Andrea Hough, a 24-year-old executive assistant from Ann Arbor, Mich.

Mom Sherry Johnston, a 51-year-old non-profit administrator and daughter Ashley Johnston, a 27-year-old manager and esthetician from Knoxville, Tenn.

Also, season 7’s Tara Costa will return to to blog for season 9! … – Cynthia Wang

Tell us: Are you excited for the new contestants?

Mitchell Haaseth/NBC

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