Valack and Lydia in “Unfinished Business”

You understand what they've created?

Lydia

The Beast.

The Beast of Gévaudan. An engineered version of it. But, it's not yet fully grown. It's still bound to its host, the teenage Chimera inside. And, it still requires the Dread Doctors' protection.

Lydia

Damnatio memoriae...

That's right. The Beast was a man first-- a human killer in the late 1700s. The Dread Doctors are trying to get it to remember itself. To remember the man. When that happens, the teenager is gone.