In 2373 he manned the helm of the Defiant in a battle against the Dominion. He listened to Captain Sisko's speech and left Deep Space 9 when the retreat of Starfleet was ordered. (DS9: "Call to Arms")
He served aboard the Defiant during the war between the Dominion and Starfleet and was among the crewmembers who were successful in their mission to destroy a Dominion facility near the Argolis Cluster. (DS9: "Behind the Lines")
He visited the Promenade and was later on duty in ops when Odo faced charges of murder. After he carried chairs in Keiko O'Brien's new school on board the station, he accompanied Commander Sisko to the Promenade to calm down the mob which wanted Odo's death. (DS9: "A Man Alone")
He was present in ops when Chief O'Brien fixed the navigational computer and later when Chief O'Brien tried to talk to Major Kira. (DS9: "Babel")
He took part in a dabo game at Quark's while Quark made a business deal with two Miradorn. (DS9: "Vortex")
He served on ops when Doctor Bashir informed Commander Sisko that Kai Opaka arrived at the station (DS9: "Battle Lines") and when Major Kira informed Commander Sisko about the arriving Paqu delegation. (DS9: "The Storyteller")
This Starfleet science officer was stationed on board Deep Space 9 between 2369 and 2375. He was mainly assigned to the science division, but occasionally joined the command division and operations division of the station. He was sometimes on duty on OPS and served also on the USS Defiant. He was also seen several times in civilian clothing and was a frequent guest in Quark's Bar.
He visited Quark's Bar when Kira Nerys and Chief O'Brien closed the establishment and the Cardassian officers had to leave and take their latinum with them and witnessed Odo's talks with the Duras sisters who, after they arrived on the station, refused to give their weapons away. (DS9: "Emissary", "Past Prologue")
He visited a shop on the Promenade and joined later fellow crewmembers in Quark's when the brawl between the Klingon Intelligence officers and the Romulans started. He escaped the brawl and visited the Promenade shortly after this incident. (DS9: "Visionary") Shortly after this incident he visited the Promenade and witnessed the destruction of Garak's tailor shop. (DS9: "Improbable Cause") During the following mission into the Gamma Quadrant, he served on the Defiant bridge and witnessed the Romulan/Cardassian attack in the Omarion Nebula. (DS9: "The Die is Cast")
He visited Quark's shortly before Lieutenant Commander Worf came on board the station. Later he reacted when the red alert resounded. Later he was temporary assigned to the security division and served alongside another security officer as guard for the Detapa Council. He was wounded in the shootout and hand-to-hand combat with the Klingons. (DS9: "The Way of the Warrior")
In an alternate timeline in 2372, he attended the memorial service for Benjamin Sisko on the Promenade. (DS9: "The Visitor")
He was on board the Defiant in 2372 during the meeting with the Karemma in the Gamma Quadrant and had to leave sickbay. Shortly after this the whole deck 2 was closed and locked because of a hull breach. After the Jem'Hadar attack cruiser were destroyed he rescued Dr. Bashir and Lt. Cmdr. Dax. (DS9: "Starship Down")
The same year he witnessed the strange appearance of the wormhole from the second level of the Promenade. (DS9: "Homefront")
He was among the crewmembers and civilians who carried furniture into Quark's after Quark left all of his property to Brunt and the FCA. (DS9: "Body Parts")
He was off duty on the Promenade when Odo and Kira had their first kiss. (DS9: "His Way")
After he visited Quark's he served aboard the Defiant during the first Battle of Chin'toka. Following the death of Jadzia Dax the Defiant returned to Deep Space 9. He was on ops when Captain Sisko left the station. (DS9: "Tears of the Prophets")
He returned to Deep Space 9 aboard the Defiant in early 2375 and was reading the latest casualty report in the wardroom. (DS9: "Image in the Sand")
He joined fellow crewmembers at Quark's and was standing at the entrance when Quark advised Ezri Dax about her relationship to Worf. (DS9: "Once More Unto the Breach")
This recurring officer was played by regular background performer Brian Demonbreun who appeared throughout the run of Deep Space Nine, but was never credited.
In most of his appearances he wore a science division uniform but in several episodes he was also seen in a command division uniform or temporary in a security division uniform. Demonbreun said he owned two uniforms like most of the background performers.