Generally speaking, for prisoners of war like this, they would be directly killed after Priscilla extracted useful information from them through interrogation, without requiring additional handling.
After all, humanity and mercy were luxuries, reserved for enemies who still had a conscience, not to be wasted on these beasts with no possibility of reformation.
However, the members in charge of the interrogation discovered a very strange phenomenon. The minotaur, who had been cursing and wailing a few days ago, actually showed no response to the interrogation methods a few days later... as if he could no longer feel pain.
Please believe in the skills of Priscilla's interrogators. They were all professionals and would not make the mistake of letting the interrogated subject endure too much pain and lose their sensory abilities... After repeated verification, they determined that a certain change had occurred within this minotaur himself, so they sent him to Lister.