Why did Klingons look like humans?

Related questions

1. How far is Vulcan from Earth?
2. Does anyone speak Klingon?
3. Why do Romulans look like Vulcans?
4. How many letters are in the Klingon alphabet?
5. Is there really a Klingon language?
6. What does Patak mean in Klingon?
7. What does the Klingon symbol mean?
8. What is hello in Klingon?
9. What does Qapla in Klingon mean?
10. Can you learn Klingon?

Tags

1. #mutated
2. #change
3. #before
4. #explanation
5. #appearance
6. #klingons
7. #episode
8. #klingon
9. #kahless
10. #canonical
11. #given
12. #rightful
13. #cloned
14. #experiment
15. #lived
16. #enterprise
17. #storyline