Gunnar Peterson is a Swedish American personal trainer known for his work with professional athletes and celebrities. Also a popular author, speaker, creator of major fitness programs, and developer of fitness equipment, he is recognized globally for his expertise in functional training and his 20 years of experience in the fitness industry.

As a child in Houston, Texas, Peterson struggled with his weight. At age 10, his mother enrolled him in Weight Watchers and began driving him to weekly meetings. As he tells People Magazine, "At one meeting they announced I'd lost 5lbs., I celebrated by buying two ice-cream sandwiches." By college, Gunnar had gotten serious about fitness and started his career; People notes the extra weight is "now but a memory on his 9.5 percent body fat frame."

Peterson owns and operates a private training facility in Beverly Hills, California where he works out up to 9 clients per day. He tells Sports Illustrated, “My main focus is function” - a reference to his emphasis on functional training modalities.

Robin Antin (born July 6, 1961) is an American dancer, choreographer, music video director, actress, showgirl, clothing designer and entrepreneur. In 1995 in Los Angeles Antin, Christina Applegate and Carla Kama founded the modern burlesque troupe The Pussycat Dolls. By 2005, she had been diversified into various media including: a pop recording group with international hits; a Las Vegas nightclub venue and floorshow; various merchandise; and a reality television series. In 2007, she created Girlicious.

As a choreographer, Antin worked with entertainers such as Paris Hilton, and artists such as Anastacia, Pink, The Offspring and No Doubt. Additionally, she was responsible for the dance ensembles in various films. In March 2009, it was announced that she had become the manager of Singer/Songwriter/Author Matt Goss.

She is the sister of celebrity hair stylist Jonathan Antin, director Steve Antin and actor Neil Antin. She appeared in an episode of her brother Jonathan's show Blow Out.

Based in Las Vegas, it features a rotating cast of dancers around vocalist Jamie Preston. Current members include Hayley Zelniker, Amanda Nowak, Colby Lemmo and Alicia Blair. Former dolls include Rachel Sterling, who was also an original member of the burlesque troupe :Kelly Levesque , Laura Goulet, Michelle "Jersey" Maniscalco, Desiree Davis,Alicia Vela-Bailey,Mallory, Jen, Loreli, Victoria, Rosa, Marcea, Rita,Claude Racine, Natasha Vernase,Jessica Lea, Beverly Sizemore Laura Diane, Ashley Gates, Bridget Nicole, Jennifer Affronti, Sheila Joy Cindy Leos, Laurel Anderson, Angela Case, Meredith "Sevin" Kerr, Gina Katon and Jamie Lee Ruiz from Pussycat Dolls Present: Girlicious who is now part of the second spin-off group.

Rocco DiSpirito (born November 19, 1966) is an American chef based in New York City.

DiSpirito was born in Queens, New York City, New York. He graduated in 1986 from the Culinary Institute of America in Hyde Park, New York, and in 1990 from Boston University with a bachelor's degree in business. DiSpirito is known for his Italian-American cuisine and his innovative fusion cooking.

DiSpirito is best known as a celebrity chef and a cookbook author. He is known for his involvement in Union Pacific, a restaurant he opened in 1997 in the Gramercy Park section of Manhattan. A year later, New York Times reviewer Ruth Reichl, in an ecstatic three-star review, reported that a woman at the next table was moaning in uncontrollable ecstasy as she ate, but it was impossible to determine what dish had provoked that reaction, since just about every entree was worthy of such moans. He left Union Pacific in 2004.

In 2003 and 2004, DiSpirito was the subject of the NBC reality television show The Restaurant, which followed DiSpirito and his mother during the opening of their restaurant, Rocco's 22nd Street, and his subsequent lack of cooperation with his investor, Jeffrey Chodorow. An episode showed Rocco and Chodorow taking a meeting at a table in the restaurant. Rocco complained about Chodorow's changes to the restaurant; Chodorow responded with his own complaint that Rocco never responded to emails. Rocco walked away from the table with no explanation, despite the fact that the meeting was not yet adjourned. Chodorow gave Rocco's chef a raise, and that same afternoon, Rocco fired the chef. Rocco claimed to be a part-owner, and Chodorow said Rocco was not an owner. The television viewer never did see whether or not Rocco produced a partnership agreement to support his claim.

Michael Sylvester Gardenzio Stallone (/stəˈloʊn/; born July 6, 1946), commonly known as Sylvester Stallone, and nicknamed Sly Stallone, is an American actor, filmmaker, screenwriter, film director and occasional painter. Stallone is known for his machismo and Hollywood action roles. Two of the notable characters he has portrayed are boxer Rocky Balboa and soldier John Rambo. The Rocky and Rambo franchises, along with several other films, strengthened his reputation as an actor and his box office earnings.

Stallone's film Rocky was inducted into the National Film Registry as well as having its film props placed in the Smithsonian Museum. Stallone's use of the front entrance to the Philadelphia Museum of Art in the Rocky series led the area to be nicknamed the Rocky Steps. Philadelphia has a statue of his Rocky character placed permanently near the museum, on the right side before the steps. It was announced on December 7, 2010 that Stallone was voted into boxing's Hall of Fame.

Sylvester Stallone was born Michael Sylvester Gardenzio Stallone in New York City, the elder son of Frank Stallone, Sr., a hairdresser, and Jackie Stallone (born Jacqueline Labofish), an astrologer, former dancer, and promoter of women's wrestling. His younger brother is actor and musician Frank Stallone. Stallone's father was born in Gioia del Colle, Apulia, Italy, and emigrated to the United States as a child. Stallone's mother is of half Russian Jewish and half French descent.