Let us not forget the most diabolical villain of them all: Mork from Ork
Mor'du, the bear prince.
Or maybe Mor Furniture for Less has a sinister backstory. Today the discount San Diego furniture market - tomorrow, the world!
Moridin and Mordeth are both villainous characters from the Wheel of Time series by Robert Jordan, however, there are also several characters with "mor" that are not villains (Morgase, Morvrin, Fedwin Morr, etc)
Morla (isn't really a villain, but will make you depressed)
I'm going to guess the trend is 10% inspired by "homonymous and complementary dual etymology" and 90% mindlessly aping Tolkien.
Has anyone noticed the predominance of repeated pairs of letters in hero names? Bilbo/Frodo Baggins. Harry Potter, Ellen Ripley, etc.
Precise, not accurate...
Morlocks from Time Machine, a whole race, not just one person.
I'll give you "Borg"
And the most sinister of them all: Mor-Ee Po-Vitch
Mor = "great" in Gaelic. But coincidentally, dubh = "black".
Just to be clear, I didn't mean your list was inaccurate, rather and only that the Star Trek universe seems to have a thing for near-Mor "_or" names.
May I have Gorn? I've been planting meme-seeds for a Gorn remix as the next ST movie.
Tolkien's invented languages, in turn, were inspired by a mixture of Finnish, Germanic, and Old English languages, so your proximal cause does not dispute, and in fact may support, TFA's claim as a distal cause. AFAICT no one is claiming that most writers consciously choose such names based on etymology.