Anton Yelchin character Charlie Bartlett
Robert Downey Jr. character Nathan Gardner
Hope Davis character Marilyn Bartlett
Kat Dennings character Susan Gardner
Tyler Hilton character Murphy Bivens
Mark Rendall character Kip Crombwell
Dylan Taylor character Len Arbuckle
Megan Park character Whitney Drummond
Jonathan Malen character Jordan Sunder
Stephen Young character Dr. Stan Weathers
Ishan Davé character Henry Freemont
Dave Brown character Officer Hansen
Eric Fink character Thomas
Noam Jenkins character Dean West
Lauren Collins character Kelly
Annick Obonsawin character Daisy
Sarah Gadon character Priscilla
Drake character A/V Jones
Michael D'Ascenzo character Scott
Dwane McLean character Bus Driver
Quancetia Hamilton character Mrs. Albertson
Richard Alan Campbell character Dr. Sam Costell
Kim Roberts character Dr. Linda Jenkins
David Fraser character Dr. Jacob Kaufmann
Marvin Karon character Dr. P. Sarossy
Abigail Bernardez character Cheerleader #1
Laura Jeanes character Cheerleader #2
Annamaria Janice McAndrew character Cheerleader #3
Amelia Tenttave character Len's Girlfriend #1
Annabelle Singson character Len's Girlfriend #2
Julia Cohen character Receptionist
Abby Zotz character Kip's Mom
Maddy Wilde character Spiral Beach Band Member
Dorian Wolf character Spiral Beach Band Member
Airick Woodhead character Spiral Beach Band Member
Daniel Woodhead character Spiral Beach Band Member
Jake Epstein character Dustin Lauderbach
Brendan Murray character Dorm Head
Derek McGrath character Superintendent Sedgwick
