On screen
Cast
28 credited performers
Keegan-Michael Key
Buddy / Dark Buddy (voice)
Cristin Milioti
Grace
Delaney Quinn
Freddy
Caleb Williams
Wade
Madison Skyy Polan
Hannah
Tristan Borders
Oliver
Patton Oswalt
Strappy (voice)
Jimmica Collins
Betty Bunny / Scared Flower (voice)
Eric Bauza
Mr. Mailbox / Worry Well / Couchy / Trashy / Pee Flower (voice)
Topher Grace
Ben
Bryson JonSteele
Derek
Seamus Flynn
Timothy
Luke Speakman
Josh
Bennie Taylor
Mailman Miles
Phuong Kubacki
Nurse Nancy
Devon Hawkes Ludlow
Charlie the Train (voice)
Michael Shannon
Willie (voice)
Clint Howard
George
Sergey Zhuravsky
Buddy (Suit)
Jonathan Yurco
Dark Buddy (Suit)
Cedwan Hooks
Betty Bunny (Suit)
Mark Aaron Buerkle
Therapist
Conner Stumm
Mailman Justin
Eric Salazar
Grilling Man
Tory J. Malone
Tyler
Brooke Bloom
Dr. Deborah Burr
Artwork unavailable
Lynette Eklund
Benny (Suit)
Rachel Appelbaum
Clocky / Mr. Mailbox (Suit)