Rose Byrne
— Martha
Bobby Cannavale
— Kevin the Monster / Doormat
Krew Boylan
— Trash Monster
Kailah Cabanas
— Martha (Suit)
Nicholas Brown
— Kevin / Homeless Monster (suit)
Wayne Blair
— The Director
Christopher Weekes
— Phil
Michael Pontin
— Bobby
Priscilla Bonnet
— Tina
Timothy Parsons
— Spike
Matthew Okine
— Comedy Host
Atlas Adams
— Thug