An oggzil was a biot used by the Yuuzhan Vong. Developed to communicate with technology found in the known galaxy, oggzils would be attached to villips, so that the Yuuzhan Vong would not need to use "dead" machines. They ate a metal-rich diet, resulting in metallic substances depositing along its vertebrae, creating the antenna effect.
- The New Jedi Order: Balance Point (First appearance)
- The New Jedi Order: Destiny's Way
- The New Jedi Order: Force Heretic I: Remnant
- The New Jedi Order: Force Heretic III: Reunion