Tank hacks away furiously, hacking off a hand and opening several large wounds before finally severing the creature's head. When it dies, the head and what remains of the body begin to change, bones shifting, features melting and stretching with disturbing rapidity, until after only a few seconds, it looks like a perfectly normal dismembered human corpse. Except for the severed hand, which remains a bestial claw. A quick check of the other creature reveals that it, too, has expired and shifted into fully human form.
Searching the bodies reveals that each creature has a blue discoloration, either a tattoo or some kind of birthmark, on their right hip. If you squint at it just right, it looks like it might be intended to represent a rat. Or possibly a pear. Their clothing is worn and dirty but otherwise unremarkable.
Both bandits carried a serviceable rapier, and on one you find a coin pouch containing 50g. A short ways into the trees near where the first foe fell, Octavio spots a narrow trail with a fresh half-bootprint.