All the other attributes pull their names from words (sometimes from other languages) related to their attributes, why couldn't Darkus? Why couldn't they make it something cool like Tempus (like Temptation) or Shadus (like Shadow or Shade). Hell even something like Tenebris, the word for 'dark' in Latin? Any of those would sound a lot better, and considering they use Darkus as their go-to 'villain' attribute, I feel like Tempus or Tenebris would've also sounded more threatening.