Kellan Christopher Lutz (born March 15, 1985) is an American fashion model, and film and television actor, who is best known for playing Emmett Cullen in the Twilight Saga film series.

Lutz is the middle child with one sister and six brothers. He was born in Dickinson, North Dakota, and was raised throughout North Dakota, the Midwest, and Arizona. After graduating from high school he moved to California to attend Chapman University for chemical engineering, but later decided to pursue an acting career instead.

Lutz has acted on a number of television shows. He had recurring roles on Model Citizens and The Comeback, and smaller roles in episodes of The Bold and the Beautiful, CSI: NY, Summerland, Six Feet Under, CSI: Crime Scene Investigation, and Heroes. He was also in the films Stick It, Accepted, and Prom Night. Additionally, Lutz has performed on the California stage and was the host of Bravo's Blow Out. He also appeared in the 2006 commercial for Hilary Duff's fragrance With Love... Hilary Duff, and in the 2007 music video for her single, "With Love". In 2008, he appeared in another music video, Hinder's "Without You". In the same year, Lutz also appeared in the miniseries Generation Kill, based on the book by Evan Wright.

Ashley Michele Greene (born February 21, 1987) is an American actress and model, best known for playing Alice Cullen in the film adaptations of Stephenie Meyer's Twilight novels.

Greene was born in Jacksonville, Florida, and is the daughter of Michele (née Tatum), who works in insurance, and Joe Greene, a U.S. Marine who now owns his own concrete business. She grew up in Middleburg and Jacksonville, and went to University Christian School before transferring to Wolfson High School when she was in tenth grade. She moved to Los Angeles, California, at the age of 17 to pursue an acting career. Greene has an older brother named Joe, who still resides in Jacksonville with their parents.

Greene is good friends with her Twilight co-stars, particularly Kellan Lutz and Jackson Rathbone whom she knew before filming of the series began. Greene has stated the she grew up watching football and is a Florida Gators fan. She was also seen attending a Green Bay Packers game against the New York Giants with Jonas and Jessica Szohr at Lambeau Field in 2010. In 2009, nude self portraits of Greene were leaked onto the internet. Her attorneys threatened to sue various websites that published the pictures.

Ryan John Seacrest (born December 24, 1974) is an American radio personality, television host and producer. He is known internationally as host of the top-rated primetime talent showcase American Idol. He has been nominated for an Emmy award in the "Outstanding Host for a Reality or Reality-Competition Program" category for his work on American Idol. He won a Daytime Emmy Award for co-hosting the 2005 Walt Disney World Christmas Day Parade with Regis Philbin and Kelly Ripa. As a television producer, Seacrest has won an Emmy for the ABC show Jamie Oliver’s Food Revolution. On radio, Seacrest is host of On Air with Ryan Seacrest, his market-topping #1 nationally syndicated LA morning drive-time radio show for Clear Channel’s 102.7 KIIS-FM. , as well as a nationally-syndicated Top 40 radio show. Seacrest hosted the 59th Primetime Emmy Awards on September 16, 2007. Seacrest has extensive deals with brand heavyweights Proctor & Gamble, Coca-Cola and Microsoft, and has a strategic marketing and technology alliance with Eventful, Inc.

Nicole Houston "Nikki" Reed (born May 17, 1988) is an American film and television actress, screenwriter and model. She became known in 2003, after the release of the film Thirteen, for which she co-wrote the screenplay. Reed has since appeared in several films, including Lords of Dogtown and Mini's First Time. She also portrays Rosalie Hale in The Twilight Saga.

She is married to Paul McDonald.

Reed was born in West Los Angeles, California. She is the daughter of Cheryl Houston, a beautician, and Seth Reed, a set designer. She has an older brother, Nathan August Reed. Her father is Jewish, and her mother, who is of Cherokee and Italian descent, is Christian; Reed was raised without religion, though she has described herself as "Jewish" and grew up around Judaism (her brother had a Bar Mitzvah).

Reed has stated that her early home life was "complicated." Her parents divorced when Reed was two years old, and she was raised solely by her mother. In 2002, when Reed was 14 years old, she moved out of her mother's house and began living on her own, mainly in apartments of the Los Angeles area.

Kristen Jaymes Stewart (born April 9, 1990) is an American actress. She is best known for playing Bella Swan in The Twilight Saga. She has starred in other films, including Panic Room (2002), Zathura (2005), In the Land of Women (2007), The Messengers (2007), Adventureland (2009), The Runaways (2010), and Snow White and the Huntsman. She will star in upcoming films in 2012: On the Road and The Twilight Saga: Breaking Dawn – Part 2.

Stewart was born and raised in Los Angeles, California. Her father, John Stewart, is a stage manager and television producer who has worked for Fox. Her mother, Jules Mann-Stewart, is a script supervisor originally from Maroochydore, Queensland, Australia. She has an older brother, Cameron Stewart, and an adopted brother, Taylor. Stewart attended school until the seventh grade and then continued her education by correspondence. She has since completed high school.

Her whole family all worked behind the camera and Stewart thought she would become a writer/director, but never considered being an actor. "I never wanted to be the center of attention – I wasn't that 'I want to be famous, I want to be an actor' kid. I never sought out acting, but I always practiced my autograph because I love pens. I'd write my name on everything." Stewart's acting career began at the age of eight, after an agent saw her perform in her elementary school's Christmas play. After a year of auditioning, Stewart's first role was a small nonspeaking part in the Disney Channel original film The Thirteenth Year. Then, she had another part in the film The Flintstones in Viva Rock Vegas as the "ring toss girl". She subsequently appeared in the independent film The Safety of Objects, in which she played the tomboy daughter of a troubled single mother (Patricia Clarkson). Stewart also played a tomboy in the film Panic Room, playing the diabetic daughter of a divorced mother (Jodie Foster). She was nominated for a Young Artist Award for her performance.