Chu'lak in 2375
Lieutenant Chu'lak was a Vulcan Starfleet science officer, born in 2278.
Chu'lak was commissioned into Starfleet in 2355 as an ensign; his first assignment was under Captain Jason Stone on board the USS Strata. The Strata's CMO, Doctor Martin Rackham, noted that Chu'lak suffered from minor psychological instability.
Chu'lak later served aboard the USS Grissom from 2365 to 2375. He was one of six survivors when the Grissom was destroyed by the Jem'Hadar in the Battle of Ricktor Prime.
Following the destruction of the Grissom, Chu'lak was assigned to starbase Deep Space 9, under the command of Captain Benjamin Sisko. During his assignment aboard DS9, Chu'lak was assigned to quarters on habitat ring level D, room twelve.
The loss of the Grissom and the deaths of his friends caused Chu'lak severe emotional problems. He obtained schematics for a TR-116 rifle and modified it to include a micro-transporter and a exographic targeting sensor, which allowed him to kill from his quarters. He chose his victims if they had pictures of people showing any kind of emotion. He killed Hector Ilario, Greta Vanderweg and Zim Brott before he was stopped by Lieutenant Ezri Dax. (DS9: "Field of Fire")
- Chu'lak was played by Marty Rackham. His name may be a nod to Stargate SG-1, where Chulak is the home planet of Teal'c and other Jaffa who once worshipped Apophis.