Anthony Aguirre

饰：Himself - University of California, Santa Cruz

Michael Behe

饰：Himself

理查德·道金斯

Richard Dawkins

饰：Himself

理查德·费曼

Richard Feynman

饰：Himself

Barbara Forrest

饰：Herself - Southeastern Louisiana University

Carlos Frenk

饰：Himself

Alister Hardy

饰：Himself

史蒂芬·霍金

Stephen Hawking

饰：Himself

Leon Lederman

饰：Himself - University of Chicago

Jon Levine

饰：Himself

Colin Blakemore

Colin Blakemore

饰：Self,(archive footage)

麦克斯·泰格马克

Max Tegmark

饰：Self,(archive footage)

布莱恩·考克斯

Brian Edward Cox

饰：Self - The University of Manchester,(archive footage) (as Prof Brian Cox)

Kenneth Miller

Kenneth Miller

饰：Self - Brown University,(archive footage) (as Prof Kenneth Miller)

Michael Persinger

饰：Self - Laurentian University,(archive footage) (as Dr Michael Persinger)