Tarquin Tarquin was a humanoid alien with telepathic abilities and some undefined power or technology allowing him to shut down the power supplies of starship s . He was encountered by in October of 2153 . Born sometime prior to the 1750s , Tarquin was discovered to have telepathic abilities . As such abilities were considered threatening on his homeworld , he was exile d to his own planet to live out the rest of his days in isolation . Tarquin ' s telepathic ability had a number of different aspects . According to him , every artifact has , imprinted on it , traces of the people who made and used it . Tarquin could read those imprints . He could also connect with certain minds on a very deep level , being able to read their every thought . Very few people have minds this sensitive ; those who did included Morianna Taal and Hoshi Sato . His telepathy was limited in range ; as a going - away present , his family presented him with an egg - shaped object he could use to extend it . Lonely , Tarquin began telepathically searching for someone he could share his exile with . Morianna Taal was the first , but as Tarquin ' s species of humanoid alien s was very long - lived , she died while he continued to live . He searched for another companion ; he had had four in total by the time the last one died before the 2050s . He said that sometimes he did not know what was worse : living alone or burying his companions . In 2153 , Tarquin detected Hoshi Sato aboard " Enterprise " as it traveled through the Delphic Expanse . Her mind was of the right type for him to connect to , and he began to monitor her thoughts for several days . Eventually , he made full telepathic contact with her , inviting her to join him on his planet in exchange for giving the " Enterprise " crew information on the Xindi . Sato stayed with Tarquin for several days while " Enterprise " investigated a Delphic Expanse sphere . During that time , she learned of his succession of companions and that he wanted her to become one . Sato refused , and foiled his attempts to telepathically trick her into staying . Once she saw through his ruse , he tried and failed to coerce her by threatening " Enterprise " , shutting down all power and systems on the vessel . As a parting gift , Tarquin gave Sato the coordinates of a colony where part of the Xindi weapon was being constructed . ( ) Background information . Tarquin was played by Maury Sterling . He was also played by Scott Bakula and John Billingsley when he projected himself in the image of Jonathan Archer and Phlox respectively . In the final draft script of " Exile " , Tarquin ' s Human appearance was described as " an attractive human man . " A note in the script also pointed out , " " The same actor will play Tarquin as a human and an alien . " " Tarquin in his true appearance was scripted to be " a hulking , grotesque creature . " Also in the final draft script of " Exile " , Tarquin was described as having had five companions prior to meeting Hoshi Sato , with the graves of all five at his sanctuary . However , this quantity was clearly reduced to four companions and graves . Tarquin ' s costume was sold off on the It ' s A Wrap ! sale and auction on eBay . Unused special effects make - up face and head applications for him were also sold off .