Joy Mercado was an ambitious reporter for the Daily Bugle and she quickly found an affinity for the Bugle's photographer Peter Parker. The two established a business partnership that took them on several adventures together and shared an obvious attraction to each other.
Despite her history as a Spider-Man character, Joy Mercado was actually introduced in Moon Knight #33 by Doug Moench, Bill Sienkiewicz and Brent Anderson in 1983. Her first appearance in a Spider-Man story was 2 years later in Spectacular Spider-Man Annual #5 by Peter David and Mark Beachum.
Joy and Peter only grew closer when the partners were both hired by J. Jonah Jameson to also work at Now! Magazine. They shared many journeys, and even a few dates, while working on stories together across the globe and due to Spider-Man's constant arrival in unusual places and Joy's keen investigative skills coupled with her constant alibis for Peter she may have been very aware of Spider-Man's secret identity.