Bern Cohen

饰：Dr. William Lemmon

里根·利奥纳德

Reagan Leonard

饰：Stephanie LaFarge

Nim

饰：Himself

Hebert Terrace

饰：Himself

Nim Chimpsky

饰：Self,(archive footage)

Renne Falitz

饰：Self

Dennis Lauricella

Dennis Lauricella

饰：Beefy Guy: re-enactment unit

Scarlett Bermingham

饰：Laura-Ann Petitto: re-enactment unit

Cleveland Amory

饰：Self,(archive footage)

Robert Nesi

饰：Beefy Guy: re-enactment unit,(as Robert J. Nesi)