Cara Buono

Character: Joanne

Isaach de Bankolé

Character: Abraham

David Lansbury

Character: Brian

Quinn Shephard

Character: Linda

Robert Peters

Character: Steve

Melissa Leo

Character: Miriam

Paul Lazar

Character: Larry

Helen Hanft

Character: Shirley

Jimmy Gary Jr.

Character: Sam

Rony Clanton

Character: Frank

Sharon Wilkins

Character: Jill

Joel de la Fuente

Character: Alien

Robert Downey Sr.

Character: Baker

Marcia Jean Kurtz

Character: Brian's Mom

Larry Block

Character: Brian's Dad

Lori Tan Chinn

Character: Mrs. Kim

Jay Oakerson

Character: Big Lab Assistant

Gregory Korostishevsky

Character: Small Lab Assistant

Kristen Schaal

Character: Information Librarian

Peter Bartlett

Character: Curator

Laura Esterman

Character: Psychiatrist

Susham Bedi

Character: Vegetarian

Ed Wheeler

Character: Guard

Jonah Meyerson

Character: Henry

Richard M. Davidson

Character: Doctor

David Smilow

Character: Science Reporter

Michael Clinton

Character: Farmer

Joseph McKenna

Character: Confessor

Lori Braverman

Character: Woman Gambler

Alberto Vasquez

Character: Jerry

Tyagi Schwartz

Character: Rosselli

Johann Carlo

Character: Frieda

Ethan Crough

Character: Jack

Kola Ogundiran

Character: Peter

Sean Sutherland

Character: Tourist

Peri Smilow

Character: News Reporter

Dwandra Nickole

Character: Admissions Person

Traci Parks

Character: Conservator