Mortar
Architect of the Menagerie
Never found. Always there. He was building the Council vault before the first stone was laid.
He wasn't. The Warden Corps works for him. They just don't know it.
None needed. He holds the keys.
In the vault, building the next cage. The empty one at the end of the row has your name on it.
Mortar is the only being who ever looked The PreEminent in the eyes and lived. The PreEminent wiped out a village (a monastery on a mountain road) and Mortar was the only survivor, because he locked himself inside one of his own cages and The PreEminent could not get in. That cage has been kept for The PreEminent ever since: the one thing nobody believes he can break out of, because he could not break in. That is how the Council found Mortar, and why they gave him the keys.
Coming soon.