The Good, the Bad and the Ficus (S01E04)

During a standard mission, the ship inadvertently gets sucked into a black hole, resulting in the crew being divided into their "good" and "evil" versions. Ficus, however, remains unchanged, reasoning that "plants are neither good nor evil, just plants." Quark faces off against his malevolent counterpart on a nearby asteroid, ultimately triumphing and banishing the evil crew back through the black hole. As they’re sent away, evil Adam Quark taunts, "Keep your deflectors up, do-gooder! You haven't seen the last of this face!"