I noticed one thing about Chaos and its incarnations: he's not that powerful.
Whether in the 90's anime, or the manga, or Sailor Moon Crystal.
- Serenity manages to repel Metalia and then finishes her off.
- Wiseman, once SM and his friends enter the battle for good, it does not last long.
- Pharaoh 90, same. Saturn lands and finishes him off with Sailor Moon.
- The only powerful incarnation of Chaos, Nehalennia. Whether with the gold crystal or without the gold crystal, she is powerful.
- I don't count Galaxia, knowing that even without Chaos, she is already the most powerful of all.
In fact, Chaos in the manga is just a toxic ingredient in a soup...
Still happy that in the future, Sailor Chaos, will intervene to change the balance, because for a villain, he is not that powerful.