Knightfall Virus

The Knightfall Virus was a genetically modified chemical weapon engineered by the Yuuzhan Vong to eradicated all life in the galaxy, and to use the dead as an army.

The Virus was first unleashed during the Battle of Hoth Echo Base, when Alsten Gabbett sends it on a rocket to Corellia. The Virus immediately consumes most of the life on the planet and is then sent throughout the entire galaxy via the Corellian Trade Spine, the largest trade network in the galaxy.

Seeking to control the Virus, Onimi uses the dead body of Damien Antilles as a host for the alpha virus. Reborn as Requies, Damien Antilles and his undead army are unleashed at the Battle of Mandalore, however, are later destroyed by Luke Skywalker.