Fero Xyn
this vicious predator, once native to the home galaxy of the Yuuzhan Vong, was the only creature from their home which had compatible genetic material to that of a vornskr. The initial Yuuzhan Vong attempts to create a Jedi-hunting creature from pure vornskr stock proved only mildly successful, due mainly to the resulting beast's lack of ferocity. The fore xyn, however, more than made up for this lack, and it was already conditioned to respond to the commands of a Yuuzhan Vong warrior. The resulting hybrid was called a voxyn, and was extremely successful at hunting down and killing Jedi Knights. Unfortunately, the resulting hybrid was incapable of reproduction, requiring that the creation of more voxyn required the cloning of the original "queen".