In Robert Lamb's script for "Micah of Bright Moon" he specifically states to the storyboard artists that Horde Prime "must not be seen clearly". This is interesting because it implies that during production the writers and artists at Filmation were still undecided as to how to present Horde Prime to the audience. As I mentioned in a post a couple of weeks ago, Bob Forward had written a visual joke involving Horde Prime wearing Bermuda shorts in his script for "Horde Prime Takes A Holiday". I for one cannot even begin to fathom why any writer or artist would want to include Horde Prime visually in an episode, because by remaining unseen the character is far stronger, and mysterious!
(click on the image to see it at full-size)