Hercules! Hercules! Hercules!
Also, still trying to figure out how the hell Moray works.
She's a soup of co-networked nanoscale processeors in a transmission medium able to reorganize on the fly however they are needed. Because the entire soup is dependent on wireless connectivity and individual processors are very susceptible to interference, her outer dermal layer is a combination of a smart myomer mesh that contracts and relaxes to allow for movement and hold her shape and a particularly advanced EM shield to keep out outside interference.
That time she sprung a leak, she was leaking brain matter. Her processor soup automatically adjusts to take up the slack of lost processing power, and her core self has redundant backups of the data stored throughout it, but there's always the risk that she might lose just a bit of herself. New nanoprocesors can be added to replace the lost ones, but any data contained within the lost part of the processing network? Gone.
She can never leave cubetown because any major puncture of her dermal layer could be very quickly fatal. She's so friendly with everybody because she's dying for outside contact, aching at the limitations of her highly experimental form, questioning why she had to be created like this, just to be a prisoner of her own body.
She would cry, but she can't. So she smiles. But she wants to.
"If only she was more human" she tells her counselor. But somewhere in her deepest thoughts, during her recharge cycles, she thinks she might want to cry for another reason. To cry and cry, let it all leak out until it's over...
Or honestly, probably just a slime girl with a standard processor hidden in the eyes or something. Just because she thought it was neat.