Mariah

Mariah is the sister of Jason, generally quite a happy and upbeat lady, though will occasionally get serious when she really needs to. But she does prefer doing her own thing. She doesn't seem to care very much about the others, acting more reckless than one would expect from a Guard. Though one might think she would be in her brother's shadow, she actually quite excels at her own things.

Much like her brother, Mariah found herself being recruited as part of the crew to be on a supply ship, the Skeld. Of course she accepted it, very happy to be able to work with somebody she quite cared about, and his friend, and... More new people! She put herself out there and attempted to make friends with the other people on the ship just to get to know everyone while they were working together. The first body being found, her brother's friend, quite shocked her, she didn't realise that somebody actually hated someone else! Thinking she could get a plan, she kept a good eye on all of the other crewmates, then several days later finds the body of Jasper. Another meeting called, nobody had any ideas of who might have done it. Suspicious... Another Crewmate never showed up for the meeting, soon realised to be dead as well. She was watching when Fletcher decided to kill Luther, shocked and surprised at his bravery, and then getting him voted out before he could cause any more harm. The remains of the Crew did their own small tasks until the dead people returned to life.

Arriving at Polus? Pretty fun. Mariah was very happy to be in a new place, and she quite liked all of the snow. And lava pits. Lava pits are fun.
Oh, by the way, she wasn't actually the Impostor. She just liked the idea of a snowy planet with lava pits. Hearing that her brother had been killed was awful, and maybe she wrongly blamed his friend for doing it. The rest of the crew jumped on it as well, and she ended up feeling somewhat bad for casting Matthew out. Too late to fix it. Whoever the killer was, they eventually got around to killing her, and she remained a ghost until eventually the dead crew all randomly got revived. That was lucky. It also signalled the end of their Polus trip, and they would finally return home.

Being back at Mira HQ was very nice for Mariah, she likes it up there! As it has always been her main place of work, of course she is comfortable there. Blending into the background, remaining unnoticed, just sorta following Jason's plan when Matthew ends up being bad... You know. Background character things.

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Unlike her brother, Mariah prefers to not show off how rich she is. She likes living a quiet and peaceful life outside of work, and most would never suspect her of having as much money as she really does. A benefit of knowing how to disguise wealth. She is also very specifically searching for a girlfriend, looking out for others who she may be interested in, and turning down any men who think they have a chance. They do not.
She is also quite strong and somewhat buff, but she would never flex in-front of anybody so it isn't very noticeable as she wears her full uniform all the time.