Sharon was a well-liked rookie Raptor pilot (callsign "Boomer") until her true identity as a Cylon was revealed — by her attempted public assassination of William Adama. One of her multiple copies became romantically involved with Helo on Caprica, surrendered to custody aboard the Galactica to remain near him, and has since aided the humans against her own people. She bore a daughter, who she and Helo named Hera, and who Sharon believes was murdered on the orders of Adama and Roslin. Her grudge for this perceived betrayal is profound. Regardless, welcomed once more into the ranks of the Galactica's crew, this new avatar of Sharon has resumed her duties as a pilot, with a new callsign: "Athena."

In just a few short years, Grace Park has managed to rack up an impressive list of credits, including the feature Romeo Must Die, the telefilm L.A. Law: The Movie and the popular CBC teen series Edgemont, in which she played Shannon Ng in the ensemble cast. She has appeared on such series as Beyond Belief: Fact or Fiction, The Outer Limits, Dark Angel, The Immortal (in which she played the recurring role of Mikiko) and the SCI FI Original Series Stargate SG-1 ("Proving Ground"). She holds a degree in psychology and speaks English and Korean, along with some French and Cantonese. Currently, she is studying Spanish.

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