The many faces of Galactus from Fantastic Four #262 by John Byrne. Colors by Glynis Wein. 1984.
John shared this behind the scenes story:
The most likely inspiration for my take on Galactus was a short story I read in one of the DC sci-fi comics of the early Sixties. A flying saucer crashes outside a small Midwestern town, and the occupant, without revealing himself, asks various local artisans to build certain objects that will help him make repairs. Based on these objects, each of the craftsmen comes up with a different idea of what the alien looks like. At the end of the story, the alien emerges from his ship and each craftsman sees just what he expected. Turns out the alien is actually formless, and those looking at him/it “project” their expectations.
Quite a while after I did my Galactus story, I was reminded of this tale, and realized that even tho I had “forgotten” it, the basic parts were most likely lurking in my creative subconscious.