Degra, a Xindi-Primate, designed the planet-killing weapon that the Xindi Council intended to use against Earth in an effort annihilate the human race.

Degra had a wife, Naara, and two children named Piral and Jaina.

Degra used his ship to destroy a Xindi-Reptillian vessel, and a fellow Reptillian avenged Degra's act by taking the Xindi-Primate's life.