Also noting that the Toyfair catalogues from the 80s,
are at one location, which is highly recommended to check out, with Transformers toys from 1984 to 1990.
I saw
on the tfw posting a cover letter by Jim Ward, but it wasn't included at the archive link... claiming that he had a submitted story idea rejected that was similar to "
Enter the Nightbird" .
The dates probably support this, as the character addendum is from February 1984, and
the script for Nightbird is dated December 1984 (and first aired in September 1985).