Like other entries in the Rogues' Gallery [Alt] series, this presents NPCs in a different fashion easier to use in combat. Essentially, these are disposable opponents who don't need to have skills referenced. They are also written to be more appropriate as combat challenges for the given Circle. The exception here is this isn't technically an alternative presentation as this NPC doesn't exist as a player option. Nor will it ever. Including being presented in that fashion just to build NPCs.
This particular entry presents a Warden (Tenth Circle) insect thrall. This is a spellcaster who summoned and bargained with an invae and it went entirely predictably as they're now under the sway of it, but they probably think it's totally fine because it likes to hunt other invae and that means we're totally on the same side. While they may fully believe they're acting freely, they aren't. Their contact with the invae hasn't just affected their mind, but also their body. Chitin is forming under their skin, along with their eyes splitting up to replicate compound eyes, and a couple new arms folded up. These features can be concealed, but they're decidedly on the unsettling side of potential features.