Christopher Doohan Christopher " Chris " Doohan is one of the sons of Montgomery Scott actor James Doohan . Chris and his twin brother , Montgomery , made uncredited appearances as background extras in the first " Star Trek " feature , . They can both be seen among the " Enterprise " crewmembers gathered for Kirk ' s briefing of the " V ' ger " threat . The DVD box release " " featured a reunion of fan extras in the " Special " Star Trek " Reunion " , including Doohan , David Gerrold , Bjo Trimble , Jo Ann Nolan , and Fred Bronson chatting on the same sound stage used for the rec deck scene . During this chat , Doohan mentioned his connection to J . J . Abrams ' " Star Trek " and that the fitting reminded him of the days in 1979 . Upon hearing that his late father ' s role of Montgomery Scott would be recast for J . J . Abrams ' , Chris ' dad ' s fans started a campaign asking fans to write to Paramount Pictures in an attempt to persuade the studio and the filmmakers to allow either him or his brother , Montgomery , to play their father ' s role in the film . At the very least , however , they would have liked to be extras in the film as they were for " The Motion Picture " . The role of Scotty in the new film went to British actor Simon Pegg , but on 5 November 2007 it was announced that Christopher Doohan had auditioned for a " minor speaking role " in the film . Doohan stated he would not have even won an audition had it not been for the support of the fans . In January 2008 , it was announced that Doohan had indeed won a role in the new film . He appeared alongside Scotty , assisting him in operating the transporter controls during the mission to the " Narada " ( stating on that his character was alternate reality counterpart to Kyle ) . With the announcement of , fans once again began a campaign to bring him back to the " Enterprise " . It was announced on IMDb that Chris would play a transport officer in the film . It was also announced on Trekmovie . com that Chris received a speaking role in the new film , and that Simon Pegg was instrumental in making that happen . This would make Chris Doohan and Leonard Nimoy the only two actors to be in both the first " Star Trek " film , " Star Trek : The Motion Picture " and " Star Trek Into Darkness " . In 2012 , outside the official " Star Trek " franchise framework , it was announced that Chris Doohan would play his father ' s character , Scotty , in the upcoming fan film series " Star Trek Continues " . The first episode , " Pilgrim of Eternity " , premiered at the Phoenix Comicon to a crowd of over 3 , 500 fans . With most of the cast in attendance , they signed posters in the lobby , which took almost three hours to complete . As of 2014 , his has become a regular role in the ongoing series . He also voices Scotty in " Star Trek Online " , with a major appearance in the " Agents of Yesterday " expansion pack released in July 2016 . Career outside " Star Trek " . In daily life , Chris Doohan is a Registered Vascular Technologist . Chris competed in a televised talent show known as " Your Big Break " in 1999 , in which participants must impress a studio audience by impersonating the musical celebrity whom they most look or sound like . Doohan emulated country singer on the show , which was produced and aired by NBC .