Was Darth Maul supposed to be a human or an alien?
Alien. His race is a “Zabrak,” although they don’t normally look like that. Maul’s entire body is tatooed as part of his “Sith pain training.”
If you look closely at the Jedi Council scene, you’ll see that one of them also has a mass of horns on his head. That’s Eeth Koth, and he and Maul are coincidentally of the same race.
Specifically, a Zabrak
At least I think so
Too bad they didn’t endure any “stop gaping at an exceptionally common use of Jedi power and block that lightsaber” training…
Too busy spending time on the “Stand there like an idiot and die” training