The line between heroism and villainy sometimes becomes blurry in Sailor MoonMany of Sailor MoonThe heroes struggle with their inner demons and the pain that could drive them to evil. Most of the villains in the grand narrative arc became evil due to tragic circumstances or manipulation.
Sailor Moon has a huge cast of characters across the moral spectrum. Some heroes are noble through and through. They know themselves and their purpose so well that they are unlikely to be persuaded to go down a dark path. Other characters could easily fall into evil if pushed a little too far, however.
10 Sailor Pluto is left too alone for her own good
Sailor Pluto would be a compelling antagonist
Sailor Pluto stands out from the other Sailor Guardians for her duty as guard of the Door of Space and Time. Its guard position is a heavy burden that keeps Pluto completely isolated.If he were to ever leave his perch, the consequences would be catastrophic.
Queen Serenity chose Sailor Pluto for such a heavy job Why She is such a serious and virtuous Sailor Guardian. But if isolation ever gets to her, she would be a formidable villain. Sailor Pluto doesn't show any signs of weakness in her character, but it would be understandable if daily isolation eventually gets to her.
9 The pressure could get to Hiromi
Hiromi has a job in high demand
Hiromi is a supporting character who appears in a single filler episode of the original Sailor Moon anime. She and her best friend, Kazuko, are talented, novice animators who land positions in the art project of a lifetime. Unfortunately, animation for the Sailor V The film brings with it a lot of pressure and demand.
The Dark Kingdom sees the struggle Hiromi goes through and targets her, preying on her insecurities and worries. Hiromi indulges in some temper tantrums, but The Sailor Guardians and her best friend, Kazuko, are quick to bring Hiromi back. Kazuko shares her insecurities and struggles with Hiromi, helping her feel less alone. If Hiromi didn't have Kazuko, though, it would be easy to see how she could have dived in completely.
8 Queen Serenity has lost everything
Queen Serenity must let go of everything she loves
Queen Serenity is one of a long line of Moon Queens and ruled the Moon Kingdom during the Silver Millennium. She was a great patron of the arts and sciences and fostered diplomatic relations throughout the galaxy. She also raised her beloved only daughter, Princess Serenity, in her image. Everything Queen Serenity has carefully built and maintained crumbles around her in a matter of days.
Many would perhaps resent Princess Serenity for falling in love with the prince of Earth, Prince Endymion, as this would trigger the downfall of the Moon Kingdom. Queen Serenity watches this with the utmost compassion, however, and uses her last remaining strength to help her daughter and her allies be reborn on Earth. Many others would use their last remaining strength to fight back and become the evil that had hurt them.
7 Kirko is inspired by a tragic figure from ballet
Kiriko might be consumed by resentment
Kiriko is a promising prima ballerina in a filler episode of the original Sailor Moon anime. She gets really close to her dreams, only to feel like they're being ripped away from her. She's worked hard to rise through the ranks in her ballet company, and is about to land a dream role when Fish Eye comes along and seemingly steals her role.
Kirko withdraws into herself and becomes quite depressed. Kiriko has the type of personality that would make her more melancholic than angry or resentful. She is also lucky to have met Usagi Tsukino in her darkest hour, and Usagi gives her much-needed encouragement. If Kiriko hadn't had that conversation with Usagi, and if she had been a little more prone to anger, she could easily become resentful, spiteful, and competitive.
6 Helios must hide from the zirconia
Zirconia and Queen Nehelenia want to exploit Helios
Helios is the Holy Priest of Elysion and has a great responsibility. Zirconia, and by extension Queen Nehelenia, want to find and exploit Helios because he wields the Golden Crystal. Helios fights tooth and nail to escape Queen Nehelenia's imprisonment and influence.
Helios hides in people's dreams, especially Chibiusa's, in his Pegasus form. If Queen Nehelenia were to get her hands on Helios again, she would not only gain access to a powerful sacred object, would probably gladly bribe Helios. Fortunately, Helios knows how to hide and choose his allies well. His quick actions prevent the worst from happening, but if he hesitates, he may be headed down a very dark path.
5 Rei's grandfather is a maniac
Rei's grandfather scares people
Rei worked at Hikawa Shrine with her grandfather. While Rei's grandfather is very devoted to the shrine, he is also very devoted to trying to flirt with any girl who stops by the shrine. He is so smarmy that the original 90's English dub tried to tone down his character.
Rei's grandfather doesn't do anything evil, per se, but he has a brief period of possession when the Dark Kingdom transforms him into his previous incarnation as one of the Seven Great Youma. The Sailor Guardians rescue Rei's grandfather and purify his soul, but unfortunately they are unable to purify him of his evil ways. Rei tries to keep him in line, but it's really a nuisance.
4 Sailor Neptune would become evil for Sailor Uranus
Michiru would do anything to protect and save Haruka.
Sailor Neptune is a great Sailor Guardian, but her loyalty will always be with Sailor Uranus at the end of the day. The two lovers act as a cohesive unit at all times. Sailor Neptune even said that the world wouldn't be worth saving if she couldn't keep Sailor Uranus safe.
It would be a really compelling story arc if Sailor Neptune became evil because she lost Sailor Uranus, or because someone powerful took her hostage. Sailor Neptune and Sailor Uranus are one of the most romantic couples in Sailor Moon. Neptune would definitely lose his mind if he really lost Haruka one day.
3 Sailor Saturn was almost surpassed by Mistress 9
Sailor Saturn has amazing powers
Sailor Saturn is such a formidable figure that, despite being a good person, many fear her gifts. She is also called the Guardian of Silence due to her powers themed around death and destruction. Darkness does not always mean evil or the likelihood of rejecting an evil path, but even so, her powers make her a very tempting target for the greater forces of evil.
Pharaoh 90 successfully possesses Hotaru with Mistress 9, and Mistress 9 briefly takes possession of Sailor Saturn and her powers. Sailor Saturn herself never turns evil. It was a difficult decision, but Saturn eventually cast Mistress 9 out of her body and fought valiantly against Pharaoh 90.
2 Sailor Mars can be quite vindictive
Sailor Mars has a notorious temperament
Sailor Mars has a fiery personality that goes hand in hand with her fiery powers. It makes sense, considering she is named after the Greek god of war. To her credit, she has incredibly strong moral fiber despite her notorious short temper.
The idea of Sailor Mars going evil is so compelling that she has her own fan-favorite antagonist: Koan. While it's unlikely that Sailor Mars would become a villain, her style and personality would certainly make her an interesting antagonist. She's no stranger to pettiness, from the way she argues with Sailor Moon.
1 Sailor Moon might break under the pressure
Sailor Moon would be a tragic fallen heroine
Not all bad guys are bad for the sake of being bad. Many bad guys in Sailor Moon once upon a time they were the noblest people. There is so much pressure—the pressure of the entire universe, in fact—on Sailor Moon's shoulders, that it would be somewhat understandable for her to crumble under it.
Sailor Moon is an all-powerful and iconic heroic character. It would probably mean the end of the universe if she turned into a full-blown villain. A short villain arc would be interesting; Sailor Moon's descent would probably be in an attempt to find a way to save everyone from destructionAnd it would probably take all the Sailor Guardians and all their allies combined to heal her soul and make her good again.