A Jabberite is a Fallen in Oninaki.
Small, humanoid Fallen that travel in packs and detach their cranial husks to wield as weapons. They will flee when their ranks thin, so use an area attack when surrounded to take down a lot of them at once.
A Daemon's Testimony 1-1
Some theorize that humanoid Fallen are not the result of human emotions, but rather those of animals. That it is an animal's strong desire to become human that gives rise to these Fallen. Something tells me there may be truth in that.