Ignore the potato quality. I do NOT have access to an actual computer at the moment.
Anyways, I had the idea of Planetary Senshi for other series.
Sailor Phaaze, the Senshi of Planet Phaaze from Metroid Prime 3: Corruption.
Originally born a Senshi like any other, it didn’t take long before she was corrupted by Phazon. She barely seems to possess any agency of her own. In fact, it almost seems like she’s being manipulated by Phaaze itself... Naturally, her attacks are all Phazon based.
About Phazon, for those who’ve never played Metroid Prime:
A semi-sentient, highly radioactive substance originating from the planet Phaaze, known for its extreme mutagenic and energy-producing properties. It was referred to as “The Great Poison“ by the Chozo. Capable of interstellar propagation, accomplished by the assimilation and destruction of its host planet's ecosystem. Most in direct contact with Phazon, die within seconds. Even living within an area with high Phazon concentration can be fatal over time. However, life forms with prolonged Phazon exposure that do not die are horribly mutated.
Abilities
Temptation’s Kiss: in some ways, the exact opposite of renowned Senshi Sailor Moon’s healing abilities. Rather than healing, Sailor Phaaze corrupts living beings with a highly controlled dose of Phazon.
Corrupted Blood: As a result of Phazon corruption, her blood is practically liquid Phazon. She can control it to some extent, or even revert her whole body into liquid Phazon. It is
very rare, and beyond even her own control, but there are times where the Phazon she “bleeds” mutates into Red Phazon. The reason for this is unknown, but it COULD be the source of the Red Phazon that has otherwise only been seen on Tallon IV, especially if she tends to visit locations impacted by the Leviathans.
Headcanons
* It is entirely possible that she is the result of a Star Seed, or even a Sailor Crystal, being exposed to Phazon at some point. Her Sailor Crystal glows a deep blue. In fact, the glow seems to pulse in a rhythm not unlike someone’s heartbeat... her Sailor Crystal is also partially covered in blue veins of Phazon that seem to seep into it. Within the core of the crystal is a lump of Phazon that seems to pulse in the same rhythm of the aforementioned glow.
* She passively and constantly exudes Phazon radiation. Exposure is almost instantly fatal for most “lower” life forms. Even other Sailor Senshi can’t remain around her for long, or else they may suffer negative effects that fall in line with the recorded symptoms of Phazon Madness, namely severe dementia and increased hostility towards others.
* To elaborate on her will, there are times where she displays awareness of how dangerous Phazon is, but she’s barely in control of most of her actions, even as she spreads it throughout the cosmos.
* Potentially able to assimilate the abilities of Sailor Senshi she corrupts, albeit with corrupted versions of their moves. For example, Shine Aqua Illusion would become Phazon based, with the name “Phazon Illusion.”