Here's a close-up of the Civil War poster by Steve McNiven. This poster was originally printed in Wizard Magazine issue #172 and heavily reprinted.... on the cover of the comic book "Civil War Files", and was also shown on the cover of Civil War Chronicles #5.  A sketch of this poster was printed in the free comic "Civil War Opening shot Sketchbook" and it was also fully reprinted in the Civil War Poster Book, as well as being printed faintly in the background as endpaper for the anthology series "Marvel Your Universe" series.  Neither Puck nor Guardian appeared in any of the Civil War issues, which was odd, but the poster made its rounds nevertheless. It's even up on the Wikipedia page for "Marvel Universe" at the time of this post.