Usterka seems to be a silent, or selectively mute character, never directly speaking in the game. Although, through various visual cues it can be inferred that she is a rather optimistic character, always seen smiling even while not particularly happy and consistently providing the ghosts with affection and treats, even while they actively hunt her during her work.

Appearance Usterka is a short woman with a fair skin complexion, with large eyes swollen with bags due to the exhausting work in the tunnels. Her hair is dark and cut into a short pixie style, with a fringe between the eyes.

All of her clothes are dark grey or black. In terms of attire, she dons a zipped sweatshirt with an exaggerated zipper over a skintight utility jumpsuit. She wears heavy, tall work boots with her pants tucked into them. Upon the waist, she wears a utility belt with pouches. Additionally, she wears thick work gloves and a cap with the logo "AWARIA" on it, which is presumably the name of the corporation that she is employed to.