Kendall Knight (Kendall Schmidt) - Kendall是樂隊的發起人同時也是樂隊的主唱。根據Kelly所言 (Gustavo的私人助理), Kendall身材高挑, 頭發以及眉頭都是金黃色的。他現年16歲。 Gustavo在選秀中選中Kendall作為Big Time Audition的歌手, 但是kendall要求Gustavo讓james、carlos和logan也加入並與他組成壹個樂隊。他被要求作為樂隊中的酷男孩，但是他拒絕了。他的妹妹是Katie Knight，她偶爾會幫助她的哥哥。例如當她發現jo說她已經有壹個男友是在說謊時，就立刻將這個消息告訴了kendall，還幫助kendall約會了jo。
James Diamond (James Maslow) - james是樂隊裏最初就想加入壹個男孩樂團的人。 他在外表上非常註重自己的發型，總是把他的幸運梳放在他的夾克衫裏，而且隨身攜帶他個人的照片。根據carlos的話，他經常約會不同的女孩，並且斷言自己是樂隊裏最帥氣的人。當mercedes griffin與樂隊起其他男孩都有過交往卻不搭理他時他很沮喪。他同樣也有點在意有彩色斑點的大圍巾，他經常建議其他人戴這種圍巾。He also has a alter ego called Bandana Man which is him wrapped in several purple bandanas. （不解）
Carlos Garcia (Carlos Pena Jr.) - carlos是樂隊裏的開心果，他總是喜歡戴上他的曲棍球頭盔。他的父親是壹個工作認真且已經參加過9次敏感性訓練的警察。（敏感性訓練是使我們更多地認識自己及自己對他人影響的壹種技術。）他從未有過壹個真正的女朋友（除了mercedes griffin——griffin的女兒，強迫他做她的男友。）他在被freight train（gustavo的新保鏢）弄得神情恍惚的時候十分可愛。他看上去非常容易交朋友，無論何時他看到有人準備開始打架時都會建議想想“小貓的快樂理念”。
Logan Mitchell (Logan Henderson) - Logan 是樂隊裏的天才，但是經常因為壓力而驚慌。無論何時其他男孩要做壹些壞事並且邀請他加入的時候，他總是說“我要去交壹些新朋友。”，但是最後仍然加入他們。It is unsure if he knows about Camille's deep crush on him, but when she kissed him pretending it was for an audition for One Tree Hill, he said he was pleasantly surprised. It is implied that he is beginning to return her crush, Camille being quick to forgive him when he attempted to be with her and another girl at the same party. Remarking you're really cool, the two shared a dance together. He has a learner's permit. He also always sees the downside to the other's schemes.
Katie Knight (Ciara Bravo)[6] - Katie is Kendall's little sister who is always shown to be a lot smarter than her mother. Katie is clever and tricky, which is a big help when getting involved in the boys' plans.
Gustavo Rocque (Stephen Kramer Glickman) - Gustavo is a worldwide record producer who meets the boys in Minnesota and offers Kendall a chance to come to Las Angeles with him, and Kendall convinces him to bring the others too. He hasn't had a hit in nine years, and the boys are his ticket back on top. He is cliche mean and always has a frown on his face while the boys are performing, even when he likes the song. In the episode Big Time Crib, he states that All talent, are dogs. Even so, when he tells them the song wasn't as good as he wanted it to be, they always manage to call his bluff. He admits to liking the boys after dealing with an absolutely perfect boyband that he hated because they were so perfect. When the boys were house-sitting he told them they liked them after they wrecked the house, had Kendall's mom clean it up but not fully, and Gustavo accidentally wrecks his own house. He calls them monkey dogs. He also is seen to have serious anger issues and his blood pressure can sky rocket. An example is in Big Time Audition he breaks a tea cup to pieces and destroying a few things outside after Kendall rejecting his first offer and he also causes a 3.1 earthquake after being really annoyed with Kendall.[edit]Guest stars
Nicole Scherzinger as herself, who made a brief appearance in the middle of the pilot episode (1 episode)
Dee Bradley Baker as Mr. Smitty, one of the boys' teachers at the School of Rocque (1 episode）
Roz Witt as Mrs. Chisdak, another one of the boys' teachers at the School of Rocque (1 episode)
Chris Masters as himself, another one of the boys' teachers at the School of Rocque (1 episode)
Tara Strong as Miss Collins, the boys' current teacher at the Palm Woods school (1 episode)
Matt Angel as Wayne Wayne/Wally Dooley, a mean bad boy who is actually a nerdy comedian who tries to kick Kendall out of the band (2 episodes)
Daran Norris as Buddha Bob, the grounds keeper at the Palm Woods. Mrs. Knight thinks he is an axe/chainsaw maniac in Big Time Bad Boy, but discovers that he is the grounds keeper at the end of the episode (3 episodes)
Stephen Keys as Freight Train, Gustavo's personal helper who is strong enough to lift the boys all at once (3 episodes)
Tiana Madry and Tiera Madry as the Simms Twins, two girls at the Palm Woods who the guys like (1 episode)
Katelyn Tarver as Jo, the boys' love interest (3 episodes)
Rachel DiPillo as another new girl at the Palm Woods who the guys fall for (1 episode)
Lorenzo Lamas as Dr. Hollywood, a cowardly doctor at the Palm Woods (1 episode)
Curt Hansen as Dak Zevon, a teen hunk whose autograph Katie and Mrs. Knight demand (1 episode)
Carlos Alazraqui as Marcos, a photographer (1 episode)
Erik Estrada as Officer Garcia, Carlos's father (1 episode)
Parker Young as Travis, Jo's fake boyfriend (1 episode)
--資料來自於維基百科