Walker Edmiston is credited as playing Enik. Although he provides the "Voice of Wisdom", Enik does not appear in this episode.
It is strange that Blandings hadn't appeared prior to this episode (such as Skylons (1974), The Longest Day (1975), Blackout (1975)...).
When Blandings is at the bottom of the pit, he hears Jack yell for him. He responds with "Jack...Will...here in the pit!". How does he know Will is up there?