With a toned build, a slightly pale complexion that borders on fair, his ice blue eyes almost seem to contrast well with these features, along with his blonde hair that he likes to keep a little short. However, his hair is far from an unruly mess, often keeping it neatly combed out of sheer force of habit and the fact that he likes to look just a little bit more attractive. And apart from the fangs and complexion that hint at what he is, Lukas seems to have practice with not really trying to stand out. And his casual outfit, at times, nearly makes him stand out in a crowd.
His outfit, while far from being the casual that some people often think of within the definition of the word, is very much casual for a person like him who is very much used to having some sort of status in the world outside of the school.