Cosmic Breeze stands at about the average height and had an average build, his pelt and horn a dark gray in coloration. His hooves, in contrast, were orange, as were his mane and short tail. His mane was flat, except for the front, where it was stylized to have three spiked ends that waved to his left. His eyes were green in color, and often wore a pair of red, circular glasses. Dark freckles dotted the bridge of his nose and cheeks, and he often wore a dark blue cape with a star-filled pattern, visually expressing his love of the cosmos.
A spiral galaxy with a visual representation of wind behind it.
A very studious unicorn would define the stallion quite well. He would often be studying both science and magic, and perhaps the science of magic. The drawback to this is that he does not go out very often to socialize. His social skills are somewhat lacking, and certain social cues would fly past his horn. Despite this, when he does go out to socialize, whether it be of his own accord or dragged away against his will, he tries to be friendly with anypony he meets, even if he was more soft-spoken and reserved. If the topic of conversation went to science or magic however, especially astronomy related, Cosmic would have a 180 degree turn to talking somepony's ear off about it.
Other than the interest of science and magic, Cosmic was also fascinated by mother nature. He enjoys taking lone nature walks through forests or parks, and to see critters of all kinds crawling, scurrying, or flying about. He often ponders if he should ever get a pet or not. If any of the critters got hurt when he was present at the situation, he would no doubt take them in and try to take care of them. He had a deep affection and care for life.
Other than studious, Cosmic was also quite the nerd. If he was not studying, and was also not outside of his house, he would most likely be playing a game of some sort, ranging from various board games and RPGs. If he was outside, and not in the middle of something study or nature related, he would be likely found at the arcade. He mostly enjoys playing by himself, but if a small group of friends wanted to play as well, he would certainly enjoy that too.
Large social gatherings make him uncomfortable, and he also dislikes it when somepony mocks the study of outer space. Animal cruelty and endangerments to the environment also get his anger flaring. He also gets agitated seeing somepony getting bullied.
Cosmic Breeze hails from the more southern lands of Equestria, and had lived with his family: his father, mother, and little sister. He also had a big brother, but he had already moved out. At his school, he excelled in his studies of magic, and was usually at the top of his class. However, he barely had any friends to hang out with or talk to since he was engrossed with his studies. Because of his studious nature, he was often picked on, but he never let that get him down very much.
When he learned about the study of the cosmos, astronomy, Cosmic hungered for more knowledge about it, and dove into any resource he could. He realized that becoming somepony who studied the cosmos was what he truly wanted to do, causing his cutie mark to magically appear on his flanks. Cosmic wanted to learn about the true nature of the cosmos and how it relates back to nature on Equestria, another subject that also fascinated him.
Once he had graduated and reached adult age, Cosmic decided that it was time to move away from his family and become more independent. It was a sad goodbye, but he knew that if he wanted to further his studies, he would need to go somewhere new. He took the train and headed north, looking for a new place to call home. He made multiple stops, but nothing seemed to interest him. However, when he made it to Ponyville, the very atmosphere of the town enticed him. It was friendly and warm. After a bit of exploration and observation of the everyday happenings with its residents, he decided that Ponyville would be the perfect place to call his new home.