Marcy

Marcy is a werewolf and one of the Alphas. She first appeared in the short story "Aftermath".

Biography
In Aftermath, Marcy and Andi had been keeping the pregnant Georgia company while Billy was out of town. When Andi and and Georgia were kidnapped, Karrin Murphy, Billy, and her freed them. It is also mentioned that Andi and Marcy "had kind of a thing in school" but it didn't work out.