Catty is a plump anthropomorphic cat monster with purple fur. She has yellow eyes, two prominent upper canine teeth, and shoulder-length black hair, which she wears with one yellow hair clip. Her outfit consists of a bright orange lei necklace, a green and blue tie-dye shirt, blue denim shorts, blue sandals, and a noticeable belly. Catty also plays the ukulele, albeit poorly, her sister Catti describing it as "an anti-blessing from Planet Hell." Despite this, Catty is still very caring toward her sister and appears generally supportive of others, she struggles to connect with her sister, and they are described as having very different personalities and interests. Nonetheless, she loves Catti and is shown supporting her unconditionally, much to Catti's chagrin. Catty is gluttonous and hefty. They're both college dropouts. (both 23 since they were coincidentally born on the same day)

Bratty is an anthropomorphic, slim green alligator with curly blonde hair, thick thighs, a noticeable bust, and dark pink eyes, lipstick and bright pink nails. She wears a dark pink tank top, black shorts decorated with a heart, and pink shoes. Bratty and Catty are best friends, often saying the same lines or finishing sentences for each other, and both are big fans of Mettaton. They speak in a stereotypical American valley-girl dialect. Bratty often sticks her tongue out when talking. She appears to have a large ego. Bratty has a great interest in food, but isn't gluttonous, and tries to watch her figure, unlike Catty. Bratty is also possessive of the trash near the alleyway. Bratty and Catty sell random shit to anyone, including an empty gun, a cowboy hat, and junk food. Catty mentions that they get all of their wares from the garbage dump and that it is good garbage. They're both college dropouts. (both 23 since they were coincidentally born on the same day)