Weyoun

Weyoun was a high-ranking Vorta in the Dominion. He has been cloned at least nine times, as of 2376.
 * Weyoun was played by Jeffrey Combs.

Weyoun 1
Not much is known about the original Weyoun. He was a diplomat for the Dominion and oversaw conquered worlds within the Gamma Quadrant. He passed away before the wormhole was discovered.

Weyoun 2
Weyoun 2 was on an assigment to a world near the newly discovered wormhole when his shuttle exploded. His death was quickly forgotten as he was not considered a very good Vorta.

Weyoun 3
No current knowledge of Weyoun 3 is available. However, he most likely died shortly before Weyoun 4 was activated and sent to go on a mission with Captain Sisko.

Weyoun 4
This version of Weyoun lead a team of Jem'Hadar, including Omet'iklan, Toman'torax and Virak'kara, to locate a group of rogue Jem'Hadar who had taken over an Iconian Gateway. Weyoun and the Jem'Hadar were rescued by the USS Defiant after they were attacked. The two crews later worked together and were successful in destroying the gateway, although Weyoun was killed by Omet'iklan for doubting them. (DS9: "To the Death")

Weyoun 5
The fifth version of Weyoun was assigned to be Skrain Dukat's Vorta advisor after the Cardassian Union joined the Dominion in 2373.

He came with Dukat to Deep Space 9 to pursuade Tekeny Ghemor to return home to Cardassia. After Dukat's plan to kill Ghemor with voraxna poison in kanar, Weyoun drank it. His Vorta physiology combated the poison, although he noted it was "quite toxic". (DS9: "Ties of Blood and Water")

Weyoun returned to DS9 several weeks later to open negotiations for Bajor to sign a nonaggression pact with the Dominion. He later detected Elias Geiger's cellular regeneration and entertainment chamber and brought the scientist and his possessions aboard his ship. Jake Sisko and Nog were also brought aboard and Weyoun gave them the Willie Mays baseball card they had been seeking. (DS9: "In the Cards")

Weyoun 5 was killed in a transporter accident in early 2375. (DS9 episode: "Treachery, Faith, and the Great River")

Weyoun 6
He Defected to Odo and killed himself

Weyoun 7
Killed by Worf

Weyoun 8
Weyoun 8 was activated shortly after the death of his predecessor, he continued to oversee Dominion activities in the Dominion War until he was killed by Elim Garak in the final hours of the war. (DS9 novelization: What You Leave Behind)

Odo removed the transcorder from Weyoun's corpse, hoping the ninth Weyoun would be like the sixth incarnation. (DS9 novella: The Dominion: Olympus Descending)