In 2369, the Duras sisters brought the Cha'Joh to the Bajoran system to meet with Tahna Los, who attempted to destroy the Bajoran wormhole with Bilitrium explosives supplied by the sisters. (DS9 episode: "Past Prologue")
One year later, in 2370, the Cha'Joh secretly entered the Gamma Quadrant via the Bajoran wormhole, and delivered the Duras sisters to the Federation's Gakora colony after provoking the deaths of most of the population at the hands of the Myvock race. The Cha'Joh subsequently fled back to the Alpha Quadrant after the Duras sisters were exposed by Commander Sisko and his crew. (DS9 comic: "Lightstorm")
In 2371, this starship engaged the USS Enterprise-D over Veridian III, working in association with El-Aurian madman Soran. The battle was a wash, as both ships were ultimately destroyed. (TNG movie: Star Trek: Generations)
- The Decipher card for the Cha'Joh uses the image from "Past Prologue."
- While named "Cha'Joh" in the CCG, the PC game version of Star Trek: Generations establishes the Duras sisters' Bird-of-Prey's designation as the Q'uarath.