How You Know Him: Couture is a mixed martial arts star and Greco-Roman wrestler who dabbles in acting. His film roles include parts in The Scorpion King 2: Rise of a Warrior and the Expendables film series. Partner: Karina Smirnoff

How You Know Him: Waltrip is a professional race car driver who’s won the Daytona 500 twice. He also does pre-race analysis for NASCAR on Fox. Partner: Emma Slater

How You Know Her: Best known for playing Mona on ABC’s Pretty Little Liars, Parrish is also a singer/songwriter. Partner: Val Chmerkovskiy

How You Know Her: The 17-year-old Duck Dynasty star is the daughter of Willie Robertson. She recently made headlines when she defended controversial comments made by her grandfather Phil Robertson about gay people. Partner: Mark Ballas

How You Know Him: The heartthrob gained early fame as a Calvin Klein model, but his breakout role was that of Jagger Cates on General Hospital in the mid-1990s. He’s since appeared on several reality shows, including Celebrity Wife Swap and his own VH1 dating show, My Antonio. Partner: Cheryl Burke

How You Know Him: Ribeiro played Carlton on The Fresh Prince of Bel-Air and later hosted the game show Catch 21 and ABC Family’s Spell-Mageddon. Last year, he was a contestant on Britain’s I’m a Celebrity…Get Me Out of Here. Partner: Witney Carson

How You Know Him: Chong is one-half of the stoner comedy duo Cheech & Chong, who have released several pot-themed comedy albums and movies. He also starred as Leo on That '70s Show. At 76, Chong will be the oldest contestant on DWTS this season. Partner: Peta Murgatroyd

How You Know Him: Best known for playing Aaron Samuels, Lindsay Lohan’s love interest in Mean Girls, Bennett has also appeared on on Veronica Mars and All My Children. Partner: Allison Holker

How You Know Her: Thompson has had a steady film and television career since the 1980s. Her more notable roles include Lorraine Baines in the Back to the Future trilogy, the title character on the NBC sitcom Caroline in the City, and most recently, Kathryn Kennish on ABC Family’s Switched at Birth. Partner: Artem Chigvintsev

How You Know Him: Smiley is a talk show host, political commentator and author who currently hosts Tavis Smiley on PBS, as well as his own public radio show. He’s also written several books on topics like poverty and race, and previously hosted his own show on BET. Partner: Sharna Burgess

How You Know Her: Representing Olympic athletes this season will be Jones, who represents the U.S. in track and field and bobsledding events. She currently holds the American record in 60m hurdles, and competed in the 2014 Winter Olympics in bobsledding after winning a gold medal at the 2013 World Championships. Partner: Keo Motsepe

How You Know Her: You might not. Mota is an 18-year-old from California who rose to Internet fame by posting her own YouTube videos, in which she offers advice on fashion, makeup, DIY projects, cooking and shopping. Partner: Derek Hough

How You Know Her: The 72-year-old fashion legend is known for her brightly colored clothing, shoes, handbags and more. In 2012, her company filed for bankruptcy. The designer and her daughter Lulu recently starred in a reality show on the Style Network. Partner: Tony Dovolani