<P> Riker was originally scripted as a much more serious, by - the - book officer--by the middle episodes of the first season, however, it was felt that he was too "official", and his character was toned down and became more of a ladies' man . Although Riker was clean - shaven for the first season, he grew a beard at the start of the second season that later would become something of a trademark . Frakes had grown a beard between seasons, for his role in the Civil War miniseries "North and South", and Gene Roddenberry asked him to keep it, because he thought it made Riker look "more nautical". </P> <P> Frakes appeared in dual roles in "Second Chances", a TNG episode in which it was established that Riker had a "twin" created years earlier by a transporter malfunction . Frakes appeared as the twin, Thomas Riker, in the Star Trek: Deep Space Nine episode "Defiant", in which he impersonates the other Riker to commandeer the starship Defiant as a member of the Maquis . The following year he guest - starred as Commander Riker along with Q in the Star Trek: Voyager episode "Death Wish". Frakes reprised his role of Commander Riker in the 2005 Enterprise series finale, "These Are the Voyages ...". Frakes also played Riker in an advert for Boole & Babbage . </P>

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