Medea Bava

Medea Bava is an Inquisitor; specifically, she is head of the Sub Rosa Inquisition.

She has the whitest skin ever, and her face continually shifts between that of a beautiful young woman to that of a haggard old crone.

When Stark burned down Tartarus, Medea went into hiding. She turned up in Kill City and killed Aelita with the Qomrama Om Ya.

She was killed by Father Traven. He used the Via Dolorosa on her, right before Kill City collapsed.