Zac Efron
as Dave Stangle

Adam Devine
as Mike Stangle

Anna Kendrick
as Alice

Aubrey Plaza
as Tatiana

Sam Richardson
as Eric

Stephen Root
as Burt

Sugar Lyn Beard
as Jeanie Stangle

Branscombe Richmond
as Kalani - BBQ Chef

Marc Maron
as Randy

Jake Johnson
as Ronnie

Kumail Nanjiani
as Keanu

Eugene Cordero
as Kai - Hotel Manager

Mary Holland
as Becky

Nicole Byer
as Office Nicole

Stephanie Allynne
as Office Stephanie

Chloe Bridges
as Apartment Chloe

Stephanie Faracy
as Rosie

Alice Wetterlund
as Cousin Terry

Lavell Crawford
as Keith

Erik Griffin
as Driver

Jake Szymanski
as Stable Guy

Wendy Williams
as Wendy Williams

Kyle Smigielski
as Luke

Andrea Miceli
as Twin Sister #1

Nancy Miceli
as Twin Sister #2

Christina Souza
as Call Girl

Olga Kalashnikova
as Russian Call Girl

Ashley Hobbs
as White Supremacist Girl

Julia Fae
as Grungy Girl #1

Andrea Russett
as Grungy Girl #2

Danielle Zalopany
as Militant Girl #1

Tabitha Humphrey
as Militant Girl #2

Bob Turton
as Bob / Lauralie

Jennie Pierson
as Office Jennie

Hilty Bowen
as Café Hilty

Tanisha Long
as Café Tanisha

Cass Buggé
as Apartment Cass

Ayden Mayeri
as Apartment Ayden

Liberté Chan
as Local Newscaster

Sandra Davis
as Sandra

Jessika Van
as Jessika the Girl in Street

Don Pomes
as Grandpa Stangle

Sally Jackson
as Grandma Stangle

Rory Hart
as Frat Dude

Katherine Klosterman
as Anniversary Montage Girl

Michael C. Price
as Father Mike

Paula Fuga
as Reception Singer

John Cruz
as Rough Rider Singer

Henry Kapono Ka'aihue
as Rough Rider Singer

Brother Noland
as Rough Rider Singer

Kimee Balmilero
as Weird Girl #1 (uncredited)

Margo Kazaryan
as Pedestrian (uncredited)