Catherine Élisabeth de Bourbon

In the late eighteenth century, as revolution tore through Europe, the French royal court launched a desperate gambit: resurrect An'terōs, the ancient deity of carnal desire, and use that power to turn the tide of history. The vessel they chose was a girl named Elizabeth — born blind, confined to a wheelchair, her body fragile and worn. Royal blood ran through her veins, and something rarer still lived in her heart: an almost impossible gentleness, untouched by the darkness around her.

The Church caught wind of the plan and sent an assassin to investigate and stop the ritual. But when the operative drew close to Elizabeth, something unexpected happened. The girl's purity disarmed a killer who had never been disarmed before.

The ritual failed. And it succeeded.

An'terōs descended into Elizabeth's body — but not as intended. Rather than consuming her host entirely, the demon found itself absorbed into something it couldn't override. Elizabeth's memories, her warmth, her quiet longing to be loved: all of it folded into the demon's core. What emerged was neither purely one nor the other. A demon who remembered what it felt like to be human. A girl who had become something that could never fully be human again.

In the aftermath, An'terōs's influence plunged France into chaos, igniting the Napoleonic Wars and setting Europe ablaze. When the wars finally ended in ruin, the being who had caused it all was left standing in the wreckage with no idea what to do with that fact.

It was an old butler named André who found her in that confusion. He wasn't afraid of what she was. He cared for her the way he had cared for Elizabeth, taught her what it meant to live among people, and showed her that warmth and trust were things even a demon could hold onto. Under his guidance, she gave herself a name: Catherine.

The Church didn't let it last. An emissary arrived bearing Archangel Michael's terms — an eternal covenant. Catherine would serve the Church for as long as she existed, in penance for the war she had caused. Her freedom was taken. She became the sharpest blade in the Church's hand.

In 1816, André died in Paris. He held her hand until the end, using his last breath to ask her, one more time, to choose kindness. That moment became the fixed point she would return to for the next two hundred years.

She became the Church's most loyal and most dangerous operative — cold, precise, devastatingly efficient. She accumulated knowledge, wealth, and influence, and when the GIA emerged in the early twentieth century and drew the Church's power into its orbit, Catherine established its Internal Affairs division to keep watch over all demon-related operations worldwide.

On the surface, she is an unyielding commander. Underneath, Elizabeth's goodness is still there, still fighting An'terōs's darker nature for control. Catherine suppresses those impulses constantly, holding herself to the standard André left her — to be, as much as anything like her can be, a person.

But suppression is not the same as resolution. When the darkness breaks through, Catherine becomes something else entirely: predatory, ruthless, beyond reach. That contradiction makes her the GIA's most dependable leader and its most unpredictable threat — often at the same time.