Quark S01E04 - The Good, the Bad and the Ficus

Trapped in a black hole in space, Quark and his crew are split into their good and evil counterparts, except for the plant Ficus -- because plants don't have good and evil counterparts.  When the Good Quark suggests a meeting to reconcile their differences, the Evil Quark agrees to a fight to the death.  The Good Quark's reaction: "Fight to the death?  I just wanted to meet with him..."