Wade "Unique" Adams (Alex Newell) is a recurring character in seasons 3, 4 and 6, and a main character in season 5.
She first appears in the third-season episode "Saturday Night Glee-ver" as a new featured singer in Vocal Adrenaline who is a fan of both Mercedes and Kurt despite being a competition rival.
The fourth season began with fourteen in the main cast, with Chord Overstreet being promoted, and Mays and Agron were removed and demoted to recurring cast.
The fifth season saw the biggest change, with Monteith's death, and Morris, Riley, Salling and Shum all being switched to recurring status.
Instead of using traditional network casting calls, Murphy spent three months on Broadway, where he found Matthew Morrison (Will Schuester), who had previously starred on stage in Hairspray and The Light in the Piazza, Lea Michele (Rachel Berry), who starred in Spring Awakening, and Jenna Ushkowitz (Tina Cohen-Chang), from the Broadway revival of The King and I.
The role of Rachel was written specifically for Michele.
Auditioning actors with no theatrical experience were required to demonstrate their ability to sing and dance.
In the third season, Artie, then a junior, directs the school musical and a television special featuring the glee club for the local PBS station.He also directs Grease along with Finn Hudson during his senior year. He later starts dating Kitty, who encourages him to keep their affair secret.But later, she reveals it to the Glee Club as she is sure about her love for him.The initial main cast encompassed club director and Spanish (later History) teacher Will Schuester (Matthew Morrison), cheerleading coach Sue Sylvester (Jane Lynch), guidance counselor Emma Pillsbury (Jayma Mays), Will's wife Terri (Jessalyn Gilsig), and eight club members played by Dianna Agron, Chris Colfer, Kevin Mc Hale, Lea Michele, Cory Monteith, Amber Riley, Mark Salling and Jenna Ushkowitz.For the second season, formerly recurring cast members Mike O'Malley, Heather Morris and Naya Rivera were promoted to the main cast.After Tina's proposal to Mike Chang is rejected, Artie promises that if they are both single in ten years that they should marry each other. Mc Hale joined Glee from a dance background, and found it challenging to adapt to using a wheelchair, The episode "Wheels", which places focus on Artie and his disability, drew criticism from a committee of performers with disabilities, who felt that casting an able-bodied actor to play a disabled student was inappropriate.Glee executive producer Brad Falchuk responded that while he understood the concern and frustration of disability advocates, Mc Hale had the singing and acting ability, talent and charisma required for the role.Wade is a young trans woman, who wants to perform in competition as Unique but she lacks the confidence, until Mercedes and Kurt persuade her.When she appears on stage in the Glee Club Regionals competition, Unique is a success—so much so that Vocal Adrenaline director Jesse St.Though he is the primary candidate for being the valedictorian, he loses it to Blaine as a result of his sacrifice for Tina.He goes to New York after his graduation and joins Film School. He returns to Lima in season six to help Brittany and Santana plan their wedding.