Marcy is Veronica's nerdy cousin who comes to visit her now and then. She is a devoted sci-fi lover who enjoys comic book conventions and Space Trek. Veronica is a bit indifferent towards her lifestyle, but Marcy still hangs around and sometimes works as Veronica's assistant whenever needed. She has auburn hair and is a freshman at Riverdale High. Her glasses oddly-shaped frames reflect her fondness for science fiction.