Robert Clarke

Rob

Robert Bice

Bram, Rob's pal

Stuart Randall

Gordon, chief of the Upriver People

Margaret Field

Ruth

Ron Randell

Riddon, chief of the Mutates

Gloria Saunders

Catherine, the Norm traitoress

William Schallert

Carver, the Mutate traitor

Douglas Evans

Jason, the Norm traitor

Marshall Bradford

Mutate Council Leader