Eileen Rand
奧斯卡金像獎得主Anjelica Huston在本劇中飾演百老匯傳奇製作人Eileen Rand。出自對音樂劇這門藝術的熱愛，她必須高超地管理充滿競爭的團隊和日益高聳的財務支出，而且前夫Jerry (Michael Christofer)還凍結了她的資產。
Academy Award winner Anjelica Huston stars as legendary Broadway producer Eileen Rand in NBC's new musical drama "Smash." Driven by a passionate love of her art, she must masterfully manage both the warring egos of her creative team and her musical's skyrocketing budget -- even as ex-husband Jerry (Michael Christofer) freezes her assets.
Karen Cartwright
一位有天賦但年輕沒有經驗的女孩Karen Cartwright。剛從愛荷華州搬到紐約來實現她的百老匯夢想。Karen必須學到在如同充滿大白鯊般困難和挑戰的專業音樂劇圈的海洋中，擊敗經驗豐富的對手Ivy贏得一生一次難得的角色。
A talented, but green girl, Karen Cartwright. Newly arrived from Iowa in pursuit of her Broadway dream, Karen must learn to navigate the shark-infested waters of the professional theater to win the role of a lifetime against her competition, stage veteran Ivy Lynn (Megan Hilty), all while maintaining her integrity.
Ivy Lynn
經驗老道，多才多藝的Ivy Lynn, 一位基本班底演員，多年試圖成為家喻戶曉的明星，但每每只能待在合唱演出班底。Ivy渴望得知自己是否能夠在聚光燈下擁有自己的位置，還是永遠都只能當一旁的配角。
A seasoned triple-threat Ivy Lynn, an ensemble performer who has spent years pursuing stardom only to be bumped back into the chorus again and again. Ivy seeks to know whether she has finally earned her place in the spotlight or if she is destined to remain a minor player.
Tom Levitt
一位試圖讓他的努力多年的好友Ivy(Megan Hilty)一舉成名的作曲家，並且努力在勁敵充滿才華但自負的導演Derek Wills(Jack Davenport)前保持冷靜。
A composer, who fights to help his old friend Ivy (Megan Hilty) achieve stardom at long last -- and tries to maintain his cool when necessity pairs him with his arch-rival, the brilliant but arrogant director, Derek Wills (Jack Davenport).
Derek Wills
百老匯圈中最聰明最有才氣的導演和編舞家之一，同時也名列最性感，風流倜儻的花花公子名單裡。但即便天才如Derek，要將從無到有製作一齣全新音樂劇，搬演上紐約百老匯的舞台也得面臨眾多考驗和挑戰。
One of Broadway's most brilliant director-choreographers – and one of its most seductive bad boys. But even Derek's genius is strained by the demands of bringing an untested new musical to the New York stage.
Julia Houston
Julia努力試著將無止境的百老匯音樂劇工作和家庭生活之間取得平衡，而往日舊愛，音樂劇明星Michael Swift(Will Chase飾)的出現，讓她的生活又起波折。
Julia struggles to balance the relentless demands of Broadway with the needs of her family, and the return of her old flame, musical theater star Michael Swift (Will Chase), hasn't made life any easier.