Rul the Obscure was a patron of Quark's on Deep Space 9.
In 2369, he was one of a select clientele Quark allowed to participate in an auction in Quark's , whom Quark had described as "all ridiculously wealthy and not too bright". He was accompanied by two associates.
Rul purchased a jeweled necklace for 150 bars of latinum that had been obtained from somewhere in the Gamma Quadrant by Vash. (DS9: "Q-Less")
Rul the Obscure was portrayed by Stan Petier, who received no credit for his appearance. Rul's gloves are different than the gloves of the other two members. His group might be "Celestine", which were mentioned in the script's list of nonspeaking characters.