Michael, a firefighter and carpenter, and Holly, a kindergarten teacher, from Knoxville, Tenn., look to take aim at the wall.

Brothers Hecthan and Hector reside in Fort Lee, N.J.; corrections officer Hecthan and Army veteran Hector are hoping to win big to help family and friends devastated by Hurricane Maria in their native Puerto Rico.

Mother-daughter duo Alex and Jodie, both nurses from Oklahoma City, Okla., share a passion for rescuing animals and together have fostered more than 150; the two hope to hit the $1 million mark on the wall.

Father and son duo Bob, a pediatric eye doctor, and Peter, a medical resident, take on the wall to benefit the Strong City Foundation, a nonprofit that helps underserved youth.

Jahmar, a high school counselor, and his uncle Michael, a limo driver, take on the wall; the Superdrop gives the two the chance to win big.

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Rebekah and Chris, a married couple from Houston, Texas. Rebekah is a Boston Bombing Marathon survivor who lost her leg in the blast as she was shielding her young son from danger. After both Rebekah and her son recovered from the bombing Rebekah realized that the emotional injuries her son sustained were far worse than the physical ones. This led Rebekah to form a charity to help kids suffering from PTSD. Rebekah vowed to do everything she could have done on two legs, on one leg, including winning millions of dollars.

Valencia and Essence, a mother-daughter flight attendant duo from Indianapolis, take on the wall, which has them flying high; Valencia goes to isolation to take on the trivia, while Essence is out front directing those balls towards the million.

Deidra, a midwife and health care specialist, and her husband Damon, a high school principal, devote their lives to helping others; the new Superdrop brings big surprises for the Detroit duo.

Bill, a retired firefighter who served on 9/11, and his daughter Meghan, a pediatric nurse, take on The Wall. After huge money amounts and an Irish Jig with Chris, this father and daughter will face the ultimate decision. Will they go big and walk away with millions or will The Wall have other plans?

Siblings Neangela and Marcus from Oak Park, Illinois hope to win big.

Sisters Karen and Lori started a charity by putting hand dryers for gloves in every classroom to help kids deal with harsh Michigan winters.

Sisters Denise, a bus driver, and Tisha, an electrician, from Milwaukee put their technical skills to work on the Wall.

Nearly 50 years apart, grandmother and granddaughter duo Nellie and Taylor from Quarryville, Pa., take on the wall.

Taylor and Keaton from Lakewood, Wash., met while in the Air Force where Taylor works in Command Support and Keaton as a Combat Control Officer. Keaton was awarded a Silver Star for his work in Afghanistan. The newlyweds hope to buy a house and start a family with a victory on the Wall.

Husband and wife Tiffany and CJ from Levittown, Penn., both police officers, have dedicated their lives to the community. The two take on the new Superdrop in hopes of conquering the Wall.

Nikki, a patient service coordinator, and her husband Jeremie, a deputy sheriff, from Ocala, Florida with four kids take on The Wall.

Goldin, a fitness guru who started a nonprofit to encourage kids to exercise and read, and fiancé Linda, currently a college professor and soon to earn her doctorate, take on the Wall.

Church co-pastors and brothers Matt, a firefighter, and Nick, a high school teacher and football coach, take on the wall; with the all-new Superdrop and millions of dollars just a drop away, there is no stopping where these Texas boys will go.

In the series premiere, two-person teams answer questions for cash and prizes.

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Matt and Jean, parents of a special needs child, take on The Wall together.

Best friends and sisters Ebony and Deanna take on the Wall.