Tráiler
Reparto
Madison Polan
Hannah
Cristin Milioti
Grace
Michael Shannon
Willie (voice)
Rachel Appelbaum
Clocky / Mr. Mailbox (uncredited)
Caleb Williams
Wade
Noah Pierre D.
Jakson (uncredited)
Clint Howard
George
Eric Bauza
Mr. Mailbox / Worry Well / Couchy / Trashy / Pee Flower (voice)
Devon Hawkes Ludlow
Charlie the Train (voice)
Seamus Flynn
Timothy
Sergey Zhuravsky
Buddy the Unicorn (suit)
Phuong Kubacki
Nurse Nancy
Bryson JonSteele
Derek
Delaney Quinn
Freddy
Keegan-Michael Key
Buddy the Unicorn (voice)
Mark Aaron Buerkle
Therapist (Day Player)
Tristan Borders
Oliver
Eric Salazar
Grilling Man
Brooke Bloom
Dr. Deborah Burr
Topher Grace
Ben
Luke Speakman
Josh
Patton Oswalt
Strappy (voice)
Jonathan Yurco
Dark Buddy (suit)
Bennie Taylor
Mailman Miles
Cedwan Hooks
Betty Bunny (suit)
Tory J. Malone
Tyler
Jimmica Collins
Betty Bunny (voice)