Question: are klingons related to vulcans?
Answer: ') Vulcans are the parent species of Romulans, though the Romulus/Remus systems were colonized so long ago that it was lost as anything but historic speculation to modern Vulcans - and Romulans. ... Klingons, on the other hand are an entirely separate planet, culture and species. No relation to Vulcans or Romulans at all.