My take on a “slime girl” oc. She’s based on the old superstition of Roman statues being so lifelike, that they had to be actually people trapped in plaster.
Vesuvius “Vess” was someone where that superstition was true, plus a little bit of necromancy. Her “slime” is actually her caramelized flesh that’s kept viscous by a heat organ (her core, derived from her heart) in her chest. She’s animalistic and vicious, desperate to survive at all costs.