Once upon a time, there was a cat boy named Milo. He lived in a small village at the edge of a big forest. Milo had the ears and tail of a cat, which made him look very unique. One day, while exploring the forest, he found a hidden path. He followed it and discovered a magical spring. The water in the spring was said to have special powers. Milo drank from it and suddenly felt a surge of energy. He then decided to use this new - found energy to help the villagers. He started to protect the village from wild animals at night, using his cat - like agility. The villagers soon realized that Milo was a special being and they accepted him wholeheartedly.
Well, it could be about a boy who found a stray cat and decided to take it home. Maybe they became the best of friends and had all kinds of adventures together.
Cats are instinctively territorial. The cat may see the boy as part of its territory or 'pack' in a sense, and the dog as an intruder. So it's protecting its own. Also, cats have a sense of safety for their environment. If the dog is causing chaos near the cat's resting or living area where the boy is also present, the cat will act to restore calm and safety for itself and the boy.
Well, a typical cat boy comic costume might include a furry bodysuit with a pattern like a cat's fur. There could also be a mask with cat-like features and maybe even some bells for a fun touch.
One common element is the cat - like features of the cat boy, such as ears and a tail. Another is usually some sort of isolation or being different from others at the start. For example, they might be an outcast in a village or a circus. Also, there is often an adventure or a journey where the cat boy discovers something about himself or the world around him.