10 Doctor Who Actors Who Appeared In Star Trek
2. W. Morgan Sheppard
Perhaps inspiring his son to dip a foot in the Trek waters, father of Mark Sheppard, W. Morgan Sheppard, has played multiple roles in multiple Trek series.
Sheppard can also boast that he has appeared in both the original movies and the Abrams reboot, playing a Klingon Commandant in Star Trek VI and a Vulcan Science Minister in 2009's Star Trek.
In meatier roles, Sheppard played Ira Graves in Next Generation episode The Schizoid Man, friend of famed scientist and Data creator Noonian Soong.
As the father of Mark Sheppard, he was also the perfect fit as the older Canton Delaware in The Impossible Astronaut, helping to deliver the message of the Doctor's demise to companions Rory and Amy and bear witness to his final moments.