Our spy reports that relative unknown Brian Moore, an actor from New Zealand, has been cast as "an alien," and that he reports to the set every morning at 3, due to the demands of his costuming and make-up.
This can only be Monat, the alien in the novels who claimed to be a member of the invasion force that ultimately resulted in the destruction of earth. Monat is a genial, polite creature who is not above using violence when called for.
The other character, played by Jeremy Birchall, is only described as a "Polish Jew. " There is no character in the novels that directly corresponds to this description.
Riverworld "Not For Hire" painting © 2002 Alan Gutierrez (used with permission)