Sythia, has a skinnyish hourglass figure body, with lilac skin, and lime greenish hair, that reaches to her lower back. Her eyes are a light blue and glow a bit in the dark. She has two deer-like antlers on her head.
She wears a V-neck T-shirt that is cut just above the stomach, and a blackish leather jacket, skinny jeans that are also ripped holes at the knees, and heels. She also has a long dragon-like tail that gets more transparent as it goes down with a ghostly flame at the end, that freezes anything that touches it instead of burning it.
Sythia, is an ECloné, with Succubus and Spirit traits. Her body is overall very attractive, she has small dragon-like wings that she can fly with, as her spirit form only lets her levitate. She has a slight “glow” that omits off her from her Spirit part of her.
Sythia, can switch between being normal and walking around, interacting with things like any other monster, and her Spirit form, she can pass through things, and take possession machines and people. She glows a bright white aura around herself in Spirit form, being also transparent. In this form, she can also shapeshift slightly, teleport short distances, and go completely invisible.
She acts young for her age, purposely trying to get the next attractive girl to notice her. Although she’s a bit shy when it comes to people she really finds attractive. She’s also a prankster, with her Spirit form, she can play tricks on people and they don’t even know what is happening.
Sythia was born from a spirit through special means and a Succubus / Robin ECloné, she was one of the few EClonés that decided to leave their parents as soon as possible and go on her own, she now lives in random abandoned places, sometimes haunting either Corrilina's Mansion or Alphys' Lab, but most of the time hangs a bit with Nabstablook in Waterfall.