Xister has long, waist-length hair that is two-toned, with the right side of her hair being ash blonde, and the left side being greyish brown. Additionally, a single strand of her hair is dyed light blue. She wears a black cap featuring a white cross in the center atop her head. Upon removing the hat, she is shown to have two black horns. Her upper face is sometimes obscured in shadow, yet her eyes remain visible. She also appears to have scarring around her eyes and on her forehead. Like most characters, she lacks a neck. She wears a black suit with a matching tie and white collar, with three gray buttons, over a white collared undershirt. She also sports a black belt with a golden buckle, accessorized with a chain and cross. Her attire is completed with black pants and shoes. She’s very calm and supportive. (Fens girlfriend) (Vivian’s sister)

Fen’s normal appearance displays fair skin with spiky strawberry blonde hair that reaches down to the ground, past her legs with a curvy ahoge on her head, bent like a square. She has a single eye that's visible on her face while the other is blocked by her hair and sharp teeth with a long tongue. Fen dons a black t-shirt with blue jeans that are circled upon halfway on her initial joint on her leg, and around those joints are three wraps of bandages on each limb. Fen’s arms and legs are particularly long, with her hands and feet being black, though her legs are thin and pointy, like a needle. Like most of Katie's characters, she lacks a neck. (Xisters girlfriend)

Vivian has long, unruly, curly-lish wavy orangish cerise hair, with a black top hat accessories with bunny ears and a small golden clock atop her head. She also has small pieces of candy scattered through her hair. Upon removing the hat, she is shown to have a pair of small black horns. She has fine skin, with the top of her face being slightly obscured, and a blue button covering her right eye. Like most characters, she lacks a neck. She sports a pink button-up vest with black sleeves over a collared white shirt and a tucked-in black tie, with a blue lollipop pin attached to her vest. The sleeves have blue and white hems. She also has a brown belt, with a large golden belt buckle. Her attire is completed with black pants and shoes. (Xisters Sister)