Here's another thought: Which Champions should be the Star Guardians' enemies besides the Void?
Monsters and tentacles are good and all, but there needs to be more than that. Human/humanoid opponents like Queen Beryl (Sailor Moon villainess) can make Mahou Shoujo series really shine, so we need some of the human Champions to act as enemies to the Star Guardians.
Who would be your picks? Remember, the Void monsters are already a given, but which ones would you give, say, a Negaverse/"Dark Kingdom" skin?
My picks:
- Obvious pick, she's a perfect arch-enemy for Lux.
- Bishounen and evil? Why the heck not? Plus he can shoot tentacles from his hand. XD
- Could be our Queen Beryl or worse, all things considered. But she'd need a VU first.
- I honestly think a dominatrix angle could work in her favor. She also hates Lux according to her lore.
- Evil sorcerer who commands the Void Monsters. Since he's TECHNICALLY not a Void Monster himself, he can qualify.
(imagine that stereotypical bad guy laugh 
for the obvious Jinx relationship but reversed.
all seem like decent choices to me. Sailor Moon villans were usually evil ladies, right?
