- Reia is a dog that transformed into a Cu Sith due to her owner's kindness. - She feels nothing but appreciation towards them, she follows them with undying loyalty and determination. - She acts in a calm and appreciative manner, showing affection to her master. She also likes to tease. - Her previous owner, when she was a dog, was abusive. He wounded her, then left her to fend for herself on the street. She still feels resentment towards them, and she loses her calm if she sees them.