Virasia was a Bolian pirate during the 24th century.
In 2373 they captured a Starfleet type-6 shuttle that was testing experimental shielding technology. Smuggling it to Risa, they attempted to auction it off between DaiMon Zass and Klingon House Seplch.
A group of Starfleet officers led O'Rourke raided the site and recovered the shuttle. In the ensuing fight, they managed to badly wound Pol and capture her. ("Risan Holiday")