Those are Orks... :D
I tend to blur the lines between them (then again, my main inspiration tends to be either horror via H. P. Lovecraft and his "disciples" or super-heroes, which already both blur the lines).
Even when I ran AD&D/D&D games, I blurred the lines (had a time travel adventure where the PCs discovered, essentially, Dinobots in the past, and discovered a future that had less magic AND lower tech than they were used to, for example), and I spent several years doing stuff for the Star Wars universe, which is a blending of Eastern Mysticism and the "we don't need to explain it, it just IS!" 'science' of the classic serials like Buck Rogers or Flash Gordon.
A comment above said "Think Star Trek" - but Star Trek is almost straight hard sci fi, at least with the scientific theories of the 60s at the core (many of which, like the Organians, the Q-Continuum and a some other nigh-omnipotent beings are now thought to be more fantasy than "likely evolution"); a more blurred example of the lines would be Doctor Who - the series was MEANT to be pure science fiction, and kind of stayed that way throughout most of the First Doctor's run (the "Celestial Toymaker" kind of blurred things a bit), and through much of the second Doctor's era (one of his best, "The Mind Robbers" intentionally and even, at a few points, self-awarely blurred the lines between myth, fiction and science fiction, taking it much closer to fantasy than before; it wouldn't be until some of the weirder Third Doctor stories that it moved closer to Science Fantasy, and it still managed to stay "closer" to Science Fiction until The Fourth Doctor's "Key to Time" saga; by the end of the series with the Seventh Doctor's "Survival" it was more Science Fantasy than Science Fiction; the TV movie/debut of the 8th Doctor put it back a little closer to Science Fiction, but then it lay fallow for over a decade, and has pretty much NEVER been Science Fiction, just pure Science Fantasy every since the reboot with the Ninth Doctor).
