Fem furnace is a 19 year old robotic teenager.. with a stomach hatch specifically designed to trap kids where her normal stomach would be. It’s cramped in the stomach hatch. But it has pillows a blanket and a plushie in there. Fem furnace can open the stomach hatch at anytime. It doesn’t kill kids or digest them, it just traps them inside her. She has greyish black hai, a trench coat and jeans like a normal teenage girl would. The stomach hatch can only fit two kids in it. She is also a yandere.