Drakh

The Drakh were a hostile species that served as antagonists in the fifth season of Babylon 5.

At some point in their history they had become a servant race of the Shadows, and had relocated to their homeworld of Z'ha'dum. After the Shadows left the galaxy with the Vorlons and all the other First Ones the Drakh remained behind on Z'ha'dum. A short time later the planet's self destruct program was triggered by Lyta Alexander, but the Drakh were able to evacuate the planet in time before it exploded.

The Drakh then went to Centauri Prime. Attaching one of their keepers to the regent, they began to subtly influence Centauri society. In addition to the Centauri, they also attached a keeper to a member of the Mars resistance, and made contact with some Minbari.

In 2262 the Drakh used their devices to take control of a number of Centauri ships, which they used to attack the Interstellar Alliance. When it was discovered that the Centauri were apparently behind the attacks, the IA confronted the Centauri, who then withdrew from the alliance. The Drazi and Narn decided to launch an attack on Centauri Prime, further isolating it from the alliance. When the Centauri regent died  w:c:hero:Londo Mollari was named Emperor in his place, and the Drakh Shiv'kala promptly attached a keeper to him as well. They forced Londo to give John Sherida and Delenn an urn containing a Centauri keeper to be attached to Delenn's unborn son on his 16th birthday.

For the next several years the Drakh used the Centauri homeworld as a base of operations. After getting their hands on a Shadow death cloud and a Shadow bio-engineered plague, they attacked Earth. Due to the efforts of the alliance the death cloud was destroyed, but the Drakh were able to infect Earth with their plague.

In 2278 the fact that the Drakh on Centauri Prime were exposed by Vir Cotto. They were soon forced to abandon Centauri Prime. Named Emperor after Londo's death, Vir sent his military out in hot prusuit of the Drakh, with assistance from the Interstellar Alliance.