Matthew Fifer

Character: Ben

Sheldon D. Brown

Character: Sam

Sandra Bauleo

Character: Debbie

Jazmin Grace Grimaldi

Character: Amber

Cobie Smulders

Character: Sophie

Scott Adsit

Character: Dr. Dragone

Michael Potts

Character: Francis

David Burtka

Character: Bo

Jo Firestone

Character: Tracy

Jason Greene

Character: Theresa

Beau Curran

Character: Young Ben

Bowen Yang

Character: Hudson

Clara McGregor

Character: Riley

Kevin William Reed

Character: Mike

Ahmad Maksoud

Character: Mahmoud

Rain Dove Dubilewski

Character: Josh

Tucker Des Lauriers

Character: Justin

Jace Moody

Character: Ray

Kian Talan

Character: Keith

Alexandra Curran

Character: Shay

Rad Hourdakis

Character: Subway Guy

Taka Kita

Character: Smoker

Gil Rodriguez

Character: Gene

Jessica Smith

Character: Steph

Jillian Avery

Character: Chelsea

John Onieal

Character: Sebastian

Ian Mellencamp

Character: Jackson

Ayo Edebiri

Character: Nikki

Michelle Conti

Character: Sarah

Tanner Cohen

Character: Seth (uncredited)

Ashley Haas

Character: Jess (uncredited)

Anthony Oberbeck

Character: Josh (uncredited)

Sarah Pribis

Character: Jordan (uncredited)

Matt Rogers

Character: Phillip (uncredited)

Simone Wasserman

Character: Jill (uncredited)

Jude Dry

Character: Charlie