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.In the third season the main cast remained at fifteen, with Harry Shum, Jr.
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.
The series has many supporting characters, including faculty members, students and relatives of the glee club members.
Broadway stars including Idina Menzel, John Lloyd Young, Jonathan Groff, Phoebe Strole and Kristin Chenoweth have been featured in guest roles.
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.