Provoker spineray

The provoker spineray was a species of creature used by the Yuuzhan Vong to "reshape" the minds of victims. Jedi Tahiri Veila was subjected to its brainwashing ability during her torture and transformation by Master Shaper Mehzhan Kwaad.

Biology and appearance
The provoker spineray was a brown-skinned, slug-like creature with several clawed, talon-like appendages sprouting from its body. It was capable of latching onto a victim's neck with its claws, and penetrating their spinal cord to map itself into the neural pathways of their brain. A spineray was capable of wiping a victim's mind, brainwashing them, and completely reshaping them.

It was similar to a crab-like creature used to weaken prisoners by sexually ravaging them with phallic appendages.

History
After several female Jedi were captured by the Yuuzhan Vong, the Master Shaper Mezhan Kwaad oversaw the torture and transformation of Tenel Ka Djo and Tahiri Veila. She utilized a provoker spineray on the latter, having it latch onto Veila's neck to penetrate her spinal cord. The creature mapped itself into her brain's neural pathways, wiping her mind and "rehaping" her into a brainwashed servant.

Behind the scenes
The spineray first appeared in the 2001 Legends novel, the eighth book of The New Jedi Order series. Shabby Blue introduced it into Legends erotica with a depiction in SBCSW79 - Revenge of the Yuuzhan Vong, Part 8: The Shaping of Tahiri. He identified the creature as a provoker spineray in his commentary on the Star Wars Erotica Forum.