Vergere is a fictional character from the Star Wars Expanded Universe. She is a Jedi Knight of the Fosh species and was the former apprentice of Thracia Cho-Leem .

Before the time of the Clone Wars, the Jedi Council received reports of an attack on a beautiful planet called Zonama Sekot, which makes incredibly fast spaceships. They sent Vergere to investigate. When she arrived, she discovered that the alien attackers, the Yuuzhan Vong, were far more mysterious than she had expected.

The Yuuzhan Vong are odd, because they cannot be felt through the Force. Like the Zonamans, they use biological technology for ships. Vergere learns that they are actually from another galaxy. They desired to rule more than just Zonama Sekot: they desired the galaxy. Realizing that the Galactic Republic and the Jedi were not prepared to fight such amazing creatures, Vergere agreed to go with them into their galaxy if they would break off their attack. Amazed by her Jedi talents, which she told them came from Zonama Sekot, they eagerly agreed.

Over a period of fifty years, Vergere lived with the Yuuzhan Vong, teaching them about the Republic and the Jedi while secretly building up a collection of information about the extragalactic aliens themselves. When the Vong decided to invade the Republic once more, Vergere continued to aid them. She rose through their ranks, becoming an important rival to Nom Anor. The Fosh led young Jedi Jacen Solo into captivity three times before betraying the Yuuzhan Vong and freeing him.

The New Republic imprisoned her for a time while they determined whether she was a defector or a spy. Vergere had several discussions with Jedi Master Luke Skywalker about the nature of the Force and the Yuuzhan Vong. Skywalker wondered why they were seemingly outside of the Force, and whether they deserved the same rights as others. She convinced him that they did, changing some of his opinions on the Jedi Knights' part in the war.

She learned of the deadly Alpha Red bioweapon and destroyed it, which led the New Republic to label her as an enemy and force her into hiding. Soon after, Vergere tricked the aliens into allowing her to get close to a base, where she launched her fighter into the ground, killing her and a great many Yuuzhan Vong. She appeared to Jacen Solo after her death, comforting him. She and Luke Skywalker believed that he had a special destiny, and that she must aid him in finding it.

Vergere was able to avoid having her Jedi powers detected by the Yuuzhan Vong war coordinators, the yammosks, by learning to make herself small. She would shrink her presence in the Force to a microscopic size, where she was almost undetectable. In this state she could also modify tiny things like molecules. This allowed her to give certain chemical properties to her tears. Through them she healed Mara Jade Skywalker and ruined the Alpha Red project.

Vergere died when she saved the Solo twins on Ebaq 9 by crashing an A-wing into the planet, killing all of the Yuuzhan Vong invaders that were on the surface except for one -- Warmaster of the Yuuzhan Vong, Tsavong Lah .