Why Him?

Keegan-Michael Key

Various Characters

Bob Stephenson

Jerry

Adam Devine

Tyson Modell

Andrew Rannells

Cole

Zack Pearlman

Kevin Dingle

Cedric the Entertainer

Lou Dunne

Megan Mullally

Evelyn

Kaley Cuoco

Justine (voice)

James Franco

Dr. Cairn

Bryan Cranston

Reagan

Steve Bannos

Math Teacher

Griffin Gluck

Gabe

Mary Pat Gleason

Policewoman

Zoey Deutch

Stephanie Fleming

Casey Wilson

Noelle Hawthorne

Elon Musk

Elon Musk

Harrison Bieker

Laird's Employee

Craig Hosking

Helicopter Pilot

Gene Simmons

Gene Simmons

Burnie Burns

Pvt. Leonard Church / Lopez the Heavy / Epsilon

Tangie Ambrose

Patty Dunne

Paul Stanley

Paul Stanley

Emely von Oest

Ned's Friend (uncredited)

Stevens Gaston

Keith (uncredited)

Ramy Youssef

Coder in Kitchen

Steve Aoki

DJ Steve Aoki

Lucy Angelo

Gamer Girl (uncredited)

Caleb Thomas

Scotty (uncredited)

Steffen Dziczek

Moviegoer (uncredited)

Peter Criss

Peter Criss

Juliette B. Reiss

Applebee's Waitress

Jee Young Han

Marnie Dingle

Toby Turner

Party Guest

Katelyn Brooke

Kissing Woman (uncredited)

Sadie Kate Ngo Hazelett

Vanessa Dingle

Grace Ly Ngo Hazelett

Vanessa Dingle

Jacob Kemp

Randy

Chris A. Liscomb

Chris A. Liscomb

Jimmy Badstibner

FBI Agent (uncredited)

Lee Stickler

Choir Member #2 (uncredited)

Tim Neff

Yankees Cap

Brenda Good

Laird's Employee

Isabel Dresden

Quirky Waitress (uncredited)

Lynly Ehrlich

Printer Employee (uncredited)

Melissa Graver

Applebee's Waitress

Evan Seidlitz

Bartender (uncredited)

Saul Preciado-Garcia

Peruvian Villager (uncredited)

Isabelle Menard

Party Guest (uncredited)

Derek McEntire

Video Game Coder (uncredited)

Jocelyn Marie

Steph's Friend (uncredited)

Alex J. Joseph

Underwear Swimmer (uncredited)

Braxton Goe

Party Guest (uncredited)

Liam Gillen

Choir Member #4 (uncredited)

Arber Mehmeti

Serbian Guard 1 (uncredited)

Richard Blais

Richard Blais

George Kareman

Party Waiter

Greg Worswick

Bartender