Robert O'Reilly

STAR TREK: DEEP SPACE NINES5, E1

Apocalypse Rising

Sisko and his crew masquerade as Klingons to expose a Changeling who has incited a war between the Federation and the Klingon empire.
STAR TREK: DEEP SPACE NINES4, E2

The Way of the Warrior, Pt. 2

Sisko (Avery Brooks) refuses Worf's (Michael Dorn) resignation; Deep Space Nine is attacked by a Klingon war fleet. With Terry Farrell, Alexander Siddig, Marc Alaimo and Robert O'Reilly.
STAR TREK: DEEP SPACE NINES4, E1

The Way of the Warrior, Pt. 1

Lt. Cmdr. Worf must choose between Starfleet and his heritage when the Klingon Empire withdraws from the Federation peace treaty.
STAR TREK: DEEP SPACE NINES5, E15

By Inferno's Light

The Klingons join the Federation's fight against the Dominion as Gul Dukat reveals his self-serving allegiance.
STAR TREK: DEEP SPACE NINES7, E22

Tacking Into the Wind

Kira masterminds a plot to obtain an enemy weapon; Worf investigates a power shift within the Klingon Empire.
STAR TREK: DEEP SPACE NINES3, E3

The House of Quark

Quark's bragging backfires and he ends up on the Klingon homeworld married to the widow of a warrior he supposedly killed.