Betty is a typical outdoor cat with a thin body and short black fur. She has bright-coloured eyes and white whiskers.
She was named Betty by Worick because she's a "black beauty". She is seen eating near Benriya's building when someone is there to put out food. She is also seen at Dr. Theo's clinic occasionally and around Ergastulum.
Despite being a stray, she's well accepted by notable Ergastulum locales; many of which open their doors and arms for her without a shed of doubt.
When Colt approaches her to pet her, she runs away and shows a disliking towards Colt.