Raised in Kosmos, resident of Sanapeccum, Crimson is over a thousand years old and has still somehow never truly grown up. Oldest child of Orchid Daemos, Crimson has been a centerpiece in all of their mother's plans since the first war they lived through, and also their mother's first disappointment. They learned to stop caring what the world thought about them at a young age, and in turn learned to treat the world with cruelty. They went out of their way to torment and watch people suffer, not because it brought them joy, but because they could, and they didn't need any reason more than that.

Crimson can see a person's soul, both while and after it is attached from the body, and because they are able to manipulate them as well, they were invited to work as a reaper. They can only shapeshift into others by consuming part of their soul, and all reapers are only allowed to absorb half of each, so Crimson was incredibly enthusiastic about their work, seeking out active warzones and places of poverty to pick up any lingering souls they can and gain more shapes to turn into. Their mother even found a way for them to travel back to Kosmos to reap the souls there as well. They were a horror story, a cryptid told to kids around the fire about dopplegangers. They would prey on those who feared them and those who tried to respect them alike... Until they absorbed Eymo

Due to intentionally going against their mother's word, Crimson knew they needed to join their oldest and youngest sisters on the run, intending to follow them to Kosmos. The situation was about to be more different than Crimson had ever lived through, and so they absorbed the child's whole soul, expecting to gain more powerful, but rather getting Eymo's entire being shoved into their body as well. He remained dead, but Crimson's personality and feelings were highly, highly influenced, causing them to become more emotional and artistic, recognizing aspects of the world they never would have seen before. They became defensive of Recrium, a very close friend of Eymo's, and vowed to protect him even though they were previously trying to kill him.

They have since been captured, dragged back to Sanapeccum kicking and screaming by their brothers, and Eymo's soul extracted from their body. While they feign their old attitude, their newfound feelings toward the world have not left them, like a scar that didn't heal right. When Recrium is still under threat from Crimson's family, they realize that they still see him as a child-- their child. When Recrium accepts his death and makes a contract trading their service after death for a few peaceful years of life, Crimson tried to talk them out of it. Even when Recrium decides to join in on Crimson's old seer hunting, bitter about the life he never got to live, they can't help but feel badly for the people they kill.