Martus Mazur Martus Mazur was a male El - Aurian refugee from the El - Aurian system during the late - 24th century . One of a handful of survivors from a Borg invasion of his planet , he used his renowned skills as a " listener " to serve his purpose as a con artist . History . Among Mazur ' s encounters , an elderly couple from Pythro V met with Mazur and he offered to invest their money for them , asking for their financial access codes . He invested it in his own business , which soon failed . In mid - 2370 , Mazur visited Deep Space 9 where he was promptly arrested by Constable Odo for swindling a couple on the station . Martus was locked in a holding cell and met a sickly alien named Cos , who showed him a gambling device that always brought him bad luck . Cos died and Martus took the device . Martus , after being released , convinced a widow , Roana , to let him turn her shop into a gaming establishment on the station ' s Promenade called " Club Martus " . Club Martus used large - scale replicas of the alien gambling device . At first the club was a success , and seriously damaged Quark ' s profits . Even Rom left Quark and became a limited partner of Martus . But soon the device began letting everyone win , cutting deep into Martus ' profits . His patron Roana wanted to close him down also . Meanwhile , an abnormal amount of unusual coincidences and minor accidents started to occur and Jadzia Dax found that the laws of probability were seriously being altered when she discovered neutrino s were not spinning as they should . The gambling devices were the cause of this and they were destroyed by phaser fire . Once again broke and under arrest , Martus was bailed out by Quark with the provision that he leave the station ; one con man was enough . ( ) Memorable quotes . " " But I ' ve done nothing wrong . " " < br > " " It ' s true . We were just talking . " " < br > " " You were talking , madam . He was listening . " " < br > " " I know all about you El - Aurians . You ' re listeners . People like to talk to you . " " < br > " " Everyone has to have someone to confide in , someone to hear their stories I offer a sympathetic ear . And if they request my help I give it to them . " " < br > " " It seems overconfidence comes in small packages around here . " " < br > " " My track record speaks for itself , just like your security file . " " < br > Appendices . Background information . Martus was played by actor Chris Sarandon in his only " Star Trek " appearance . Sarandon commented , " " Con men are always fun to play . In any character , actors get to live other lives . And to play someone much cleverer – and also much more self - delusional – is a treat . " " The script for " Rivals " described Martus as " " a tall , elegantly dressed and mannered man in his forties . " " Martus was the first El - Aurian identified as such in dialogue . Fellow El - Aurian Guinan was not revealed to be this species until . The writers intended for Martus to be Guinan ' s son , but the connection was dropped when they found out Whoopi Goldberg was unavailable . Martus was also intended to be a recurring resident on the station , a rival for Quark . ( " " , p . 109 ) Michael Piller explained , " " When we did ' Rivals ' I thought that the character of Martus had a chance of being a recurring one . It was like Harry Mudd or something like that . But I don ' t think it will . " " ( " Captains ' Logs Supplemental - The Unauthorized Guide to the New Trek Voyages " , p . 67 ) Indeed , the idea of Martus becoming a recurring character was dropped when " Rivals " turned out to be not particularly popular with fans and production staffers . ( " " , p . 109 ) A long - sleeved grey and copper - colored jumpsuit with a triangular pattern and a black , white and gray jacket with gold and black trim as worn by Sarandon were later collectively sold off in the It ' s A Wrap ! sale and auction for US $ 492 . 00 . In his review of " Rivals " , " Star Trek " author Keith R . A . DeCandido thought Chris Sarandon " " utterly fails in the role of Mazur . He ' s flat , dull , uninteresting , has none of the needed spark with Armin Shimerman that the role calls for , nor do we see any evidence of the charm he ' s supposed to be using on both Alsia and Roana . " " Apocrypha . Mazur and the events of " Rivals " are briefly referenced in the eBook " Sargasso Sector " , in which Fabian Stevens places a bet on Julian Bashir to win the racquetball game and subsequently loses a large amount of money . Mazur is also featured in the " Star Trek Customizable Card Game " .