Maya, the Siren, hails from the greener pastures of Athena, where she was revered with something akin to God worship. Not one to sit idle, being gawked at by the locals, Maya rebelled against the cloistral order that sheltered her. Ultimately, this confrontation led to Maya putting a bullet in the Head Monk.
In the face.
Well, now she's in Pandora looking to expand her skills as a Siren.