Degra was a prominent Xindi-Primate scientist who represented his people on the Xindi Council. He was the primary designer of the Xindi weapon.
After Enterprise NX-01 entered the Delphic Expanse, members of the Xindi Council wanted to attack the ship because they believed that it was the first ship of an invasion force. Degra was against attacking the vessel, feeling that such an action could reveal the Xindi and their presence. Degra believed that it was best to keep hidden until the new weapon was complete. He was able to persuade the council to follow this course of action. (ENT: "The Xindi")
Degra was the first Xindi Council member to trust Archer; he was swayed by evidence Archer presented showing that the Guardians were lying to the Xindi. Degra met with Archer aboard Enterprise, and was shown the corpses of the Reptilians who Archer had followed into the past and prevented building a bio-weapon. He also showed Degra the body of one of the Sphere-Builder species who served as a test subject. Degra was shown data that proved that the spheres were changing space so that the Sphere-Builders could inhabit the region. When a Reptilian ship approached Enterprise and Degra's ship, Degra helped destroy the Reptilian ship. He arranged for Archer to present his case to the Xindi Council in February of 2154. (ENT: "The Forgotten", "The Council")
After Archer spoke to the Council with Degra's support, the Xindi reconsidered their attack on Earth. Dolim pretended to be swayed to Degra's side, but turned out to be deceiving him; Dolim murdered Degra in retribution for Degra's destruction of the Reptilian ship. As Degra was dying, Dolim promised to find and kill Degra's wife and children as well. Dolim, however, was unable to carry out his threat, as he was killed by Archer, who was attempting to stop Dolim from destroying Earth. (ENT: "The Council", "Zero Hour")
