Guest Stars Miranda Cosgrove as Herself Nathan Kress as Himself Jerry Trainor as Himself Selena Gomez as Herself Victoria Justice as Herself Robert Downey Jr. as Himself (Robert Downey, Jr.) Jennette McCurdy as Herself Ariana Grande as Herself Keke Palmer as Herself Chris Rock as Himself Jaden Smith as Himself James Maslow as Himself Kendall Schmidt as Himself Leon Thomas as Himself Steve Carell as Himself Noah Munck as Himself Jesse McCartney as Himself Carlos PenaVega as Himself Shaun White as Himself George Lopez as Himself Miley Cyrus as Herself John Cena as Himself Cory Monteith as Himself Taylor Lautner as Himself Logan Henderson as Himself Ryan Sheckler as Himself Nicola Peltz as Herself Zoe Saldana as Herself Lily Collins as Herself Matt Shively as Himself David Spade as Himself Rosario Dawson as Herself Zachary Levi as Himself Lea Michele as Herself Ashley Argota as Herself Jackie Chan as Himself Katy Perry as Herself Michelle Obama as Herself Justin Bieber as Himself (Performer) Apolo Ohno as Himself Anna Faris as Herself Robbie Amell as Himself Tina Fey as Herself Gage Golightly as Herself Dylan Sprouse as Himself Tyra Banks as Herself Adam Sandler as Himself (Angel Adam Sandler) Jonah Hill as Himself Dev Patel as Himself Rihanna as Herself (Performer) Jackson Rathbone as Himself Nicholas Purcell as Himself