Zachary David Alexander Efron (born October 18, 1987) is an American actor. He began acting in the early 2000s, and became known to young audiences after his roles in the Disney Channel Original Movie "High School Musical", the WB series "Summerland", and the film version of the Broadway musical "Hairspray". Speaking to "Newsweek" in June 2006, director Adam Shankman described Efron as "arguably the biggest teen star in America right now".

Vanessa Anne Hudgens (born December 14 1988 in Salinas, California) is an American actress and singer. She made her screen debut in 2003 and appeared in the Hollywood films "Thirteen" and "Thunderbirds", before coming to fame in the 2006 hit Disney Channel film, "High School Musical". Hudgens also began a music career and released her debut album, entitled "V", in 2006. In 2007, Hudgens is the new spokesperson for Neutrogena.

Ashley Michelle Tisdale (born July 2 1985) is an American actress and singer. After appearing in several television roles during the late 1990s and early 2000s, she became known to young audiences for playing Maddie Fitzpatrick on the Disney Channel Original Series "The Suite Life of Zack & Cody" and Sharpay Evans in the Disney Channel Original Movie "High School Musical".

Corbin Bleu (born on February 21, 1989) is an American actor, model, dancer, and singer best known for his roles in the film "Catch That Kid", the Disney Channel original movies "High School Musical" and "Jump In!" which he stars along with his dad David Reivers, and the series "Flight 29 Down".

Lucas Stephen Grabeel (born November 23, 1984) is an American actor and singer. He is perhaps best known for his role as Ryan Evans in the Disney Channel Original Movie "High School Musical" and its sequel "High School Musical 2" and as Ethan Dalloway in the third and fourth installments of "Halloweentown" - "Halloweentown High" and Return to Halloweentown.

Monique Adrienne Coleman (born November 13, 1980) is an American actress best known for being one of the co-stars of the Disney Channel Original Movie, "High School Musical", in which she plays Gabriella Montez's (Vanessa Anne Hudgens) best friend Taylor McKessie. Coleman also has a recurring role on "The Suite Life of Zack & Cody", as London and Maddie's friend, Mary-Margaret. She also competed in the third edition of ABC's "Dancing with the Stars", …

Kaycee Stroh (born on May 29, 1984 in Salt Lake City, Utah) is an American actress, singer and dancer. She had a minor role in the hit Disney Channel Original Movie, High School Musical as a braniac girl named Martha Cox, who secretly loved hip-hop dancing. She also has a recurring role in the Disney Channel Original Series, "The Suite Life of Zack and Cody" as Leslie, a girl who played on the same volley ball team as main characters of the show, London and Maddie.

Chris Warren Jr. is an American actor. He is the son of actress Brook Kerr, who is best known for playing Whitney Russel on the NBC dayimte soap opera "Passions", and her husband Christopher Warren. Chris has been featured in such movies as 2000's "Love & Basketball" and 2001's "Hardball". Since March 2004, he has played Jimmy Ramírez on the soap opera "The Bold and the Beautiful".

Olesya Rulin (born March 17, 1986) is an American actress, originally from Likhoslavl, Russia. She is well known for her role as Kelsi Nielsen in "High School Musical" and "High School Musical 2". Olesya has also been featured in three other Disney Channel films and several other films. She is currently attending Westminster College in Salt Lake City, Utah and is pursuing degrees in business marketing, economy, and psychology.

Ryne Andrew Sanborn (pronounced as Rine) was born on February 3, 1989 in Salt Lake City, Utah. He was the "child of light" in the 2002 Olympic Games in his hometown. He also starred as Jason in "High School Musical". He currently lives in Taylorsville, Utah and attends Taylorville High School. He plays hockey for Taylorsville as well as for the Utah Stars traveling team.

Bart Johnson (born in Hollywood, California) is an American actor best known for playing Coach Jack Bolton in a Disney Channel Original Movie "High School Musical". The character is the father of Troy Bolton (Zac Efron). Johnson's other television credits include "Babylon 5", "JAG", "CSI: Miami" and a few others. He is married to Robyn Lively, sister of Blake Lively.

Alyson Reed (born January 11 1958) is an American dancer and actress. Reed made her Broadway debut in "Dancin'" in 1978. Additional theatre credits include "Dance a Little Closer", "Cabaret", "A Grand Night for Singing", and "Marilyn: An American Fable". She was nominated for the Tony Award for Best Featured Actress in a Musical for "Cabaret" and the Drama Desk Award for Outstanding Actress in a Musical for "Marilyn".

Socorro Herrera is a film actress. Herrera played the mother of Gabriella Montez played by Vanessa Anne Hudgens in the Disney Channel Original Movie "High School Musical". She also appeared in the movies "Angels in the Attic" and "Fedora".

Joey Miyashima (born November 18, 1957) is a television and film actor. He played Pee-wee Herman's Japanese pen pal, Oki Doki, in an episode of "Pee-Wee's Playhouse". He had a role in an episode ("9 Minutes and 52 Seconds Over Tokyo") of "The Tracey Ullman Show", and another in its spin-off, "The Simpsons", as the voice of Toshiro, the apprentice chef, in the episode called "One Fish, Two Fish, Blowfish, Blue Fish".

Nick Whitaker (born October 1, 1988) is an American actor who played the lead role of Colby in "Benji: Off the Leash", and Chase Patterson in "Message in a Cell Phone". He also appeared in the Disney Channel movies High School Musical and Read It and Weep. Nick is also active in the LDS church and has appeared in many Church related movies which include starring as the Prophet Joseph Smith in the major film from the LDS Motion Picture Studios, …

Jennifer Leigh Blushi (July 23 1984) is an American actress and native of East Bridgewater, Massachusetts. She will also be in High School Musical 2 in the summer of 2007. In her early years she was primarily a stage actress performing with Donny Osmond in "Joseph and the Amazing Technicolor Dreamcoat" as well as many other productions in Boston, New York, Las Vegas, and Washington D.C.