I’d say disobeying their masters is almost unthinkable. Maybe that’s what the potion does: destroys the bonds between the “Wild” and his pack then reattaches the threads to the human making them as precious to the wolf as all the pack member combined.
Can an unbonded wolf still talk? I think it should, but then again it also makes sense that they can’t form speech with their canine mouths. It could also be another reason that humans might view them as beasts they’re giving a purpose to.
Not really remembering their past lives makes sense as they might question where they are now. However knowledge of dens and those they knew might be useful to getting more slaves so why remove it? Maybe they remember the past but the potion and new bond makes it seem unimportant. Their past only exists to serve the master. They’ll reflect on it only on command.
Definitely agree on the “Free” having lots of different roles, including helping to capture other “Wild”. Maybe they also desire their masters touch even if it’s just them putting their hand on their wolf’s shoulder.
Maybe the human needs a specific gene for a wolf to become bonded to them.
I think it should just be one wolf to start off with. It makes sense for the character to be out in the wilderness because I think it would be good if they met the Wild before they became a Free to help establish what the wolf was like before he was brainwashed. Maybe a rarely seen enforcer or alpha thats taking revenge on the caravan for what the humans have done.
Another idea I had was about a member of the higher class who had been promised a puppy for his birthday but doesn’t like any of the choices available. This changes when a lone Wild breaks into the city to rescue his younger brother from being brainwashed.
The device the wolves are strapped into, while the potion does it’s work, was something like the animus from the Assassin’s Creed movie but with extra flexible restraints on their arms and legs as well as a helmet with wires coming out as well as a mouthpiece feeding them more potion.
Like this - https://theinsightfulpanda.files.wordpress.com/2016/05/assassins-creed-movie-animus.png