The story that introduces Marcy and The Soular System, with its flower power lettering here and there, is a zany modeling story that ends up in a club where Bunny introduces her boyfriend to The Soular System. Pay particular attention to the last page of the story. The Soular System band members accept Bunny and Arnold as friends, upon being introduced by Marcy, so the friendship between the two young women has acted as a catalyst for the development of a wider mixed-race social group.

As Britt pointed out to me, the first Bunny issue with Marcy on the cover is #11. This issue actually contains a strange, 3-page Marcy story, that concludes a few pages later on a text page featuring a fictional interview between Bunny and Archimedes Gold, 'the world's ultra-brainiest boy inventor'. Bunny does have a portfolio of support features, such as the comedy superhero strips, Fruit Man, and Sooper Hippie, that are also interesting reads.
The 3-page Marcy story in Bunny 11 also features the other members of The Soular System, Gideon, Bomby, and Randolph, who are significant characters in their own right, and have roles in other Bunny stories featuring Marcy.
Many thanks to Masterbowler and the Harvey Preservation Society for the scans. In the next Out Of This World post, we'll be looking at another story featuring Marcy, plus her inclusion in the fashion pages.