He is portrayed by Finneas O'Connell.
Alistair is first seen in gym class, where he continuously avoids eye contact with Spencer. Spencer later tries to approach him again and introduces himself as Roderick's friend, seeing that they are lab partners. Throughout the song Friday I'm In Love, Alistair is seen throughout different scenes with Spencer.
He later appears in the Choir Room, playing ukulele when Spencer walks in. He heard about how Spencer helped Roderick and apologized for treating him nonchalantly, and then goes on the compliment his dance moves and his looks. Spencer suggests that he join New Directions, successfully persuading him with a kiss. Alistair is last seen singing Cool Kids with Spencer as his solo partner.
Alistair performs in Rather Be with the rest of the New Directions and sings a part with Spencer. He is in the choir room when Mr. Schue says that the Warblers will be joining Glee club. Later, he is in the auditorium with the new group practicing dance moves. He watches Will and Sue perform The Final Countdown, and he performs in Rise at the close of the episode.
During practice, the Warblers discuss the seriousness of the contest, and later Roderick's poor dance moves. Spencer tries to defend him, but two of the Warblers remark that his moves are worse. Spencer retorts that he just has to look good on the stage, causing one of them to counter again, saying that they are all good-looking, even "Julianne Moore"—meaning Alistair. While discussing how to improve their dance moves, Spencer initially suggests Alistair help them practice, but Roderick advises against it saying he doesn't want to see them make out.
Alistair later shows up on stage with the rest of New Directions during the competition and later the celebration party in the choir room where he and the others help place the old trophies back into the trophy case.
The episode opens with New Directions winning 2015 Nationals. Alistair is seen celebrating this win. He is present during Will's farewell performance of Teach Your Children. He, along with Jane, Madison, Mason, Myron, Spencer and several others are announced as the new official members of New Directions, now led by Sam.
He is seen for the final time with the rest of the New Directions (past and present) singing I Lived.
- Alistair is one of the two members of New Directions whose surname wasn't revealed, the other one being Skylar.
- He and Madison are the only members of Season Six New Directions to not have a solo or duet.
|Directors||Emma Pillsbury • Finn Hudson • Holly Holliday • Kurt Hummel • Rachel Berry • Sam Evans • Will Schuester|
|Members||Alistair • Jane Hayward • Madison McCarthy • Mason McCarthy • Myron Muskovitz • Spencer Porter|
|Alumni||Artie Abrams • Blaine Anderson • Brittany Pierce • Quinn Fabray • Finn Hudson • Kitty Wilde • Kurt Hummel • Mercedes Jones • Mike Chang • Noah Puckerman • Rachel Berry • Roderick Meeks • Sam Evans • Santana Lopez • Skylar • Tina Cohen-Chang • Unique Adams|
|Former Members||April Rhodes • Joe Hart • Jesse St. James • Lauren Zizes • Matt Rutherford • Rory Flanagan • Sugar Motta • Sunshine Corazon • Marley Rose • Jake Puckerman • Ryder Lynn|
|Related||New Directions Boys • New Directions Girls • Dalton Academy Warblers • Sue Sylvester • Dakota Stanley • Bassist • Drummer|