An interesting adversary for an Inquisitor; she (for it is a 'she') could be run as almost anything.
An interrogator, perhaps, or a warrior.  And the heavy stubber servitor could also be a warrior type.
The shadowy cultist figure could be a sage or a mystic.  The handcuffed prisoner is their penitent.
And the other two shady looking assassin types are more properly warriors.
But you can imagine this crew escvaping from Xyphonica and disappearing into the Daniverse to plague our inquisitorial teams in the future, in pastures new.