Matthew Fifer as Ben

Sheldon D. Brown as Sam

Sandra Bauleo as Debbie

Jazmin Grace Grimaldi as Amber

Cobie Smulders as Sophie

Scott Adsit as Dr. Dragone

Michael Potts as Francis

David Burtka as Bo

Jo Firestone as Tracy

Jason Greene as Theresa

Beau Curran as Young Ben

Bowen Yang as Hudson

Clara McGregor as Riley

Jude Dry as Charlie

Kevin William Reed as Mike

Ahmad Maksoud as Mahmoud

Rain Dove Dubilewski as Josh

Tucker Des Lauriers as Justin

Jace Moody as Ray

Kian Talan as Keith

Alexandra Curran as Shay

Rad Hourdakis as Subway Guy

Taka Kita as Smoker

Gil Rodriguez as Gene

Jessica Smith as Steph

Jillian Avery as Chelsea

John Onieal as Sebastian

Ian Mellencamp as Jackson

Ayo Edebiri as Nikki

Michelle Conti as Sarah

Tanner Cohen as Seth (uncredited)

Ashley Haas as Jess (uncredited)

Anthony Oberbeck as Josh (uncredited)

Sarah Pribis as Jordan (uncredited)

Matt Rogers as Phillip (uncredited)

Simone Wasserman as Jill (uncredited)