Hemlock is known to be mysterious and anti-social. He is described as a tall lanky man, wearing a lab coat with a plain sweater and slacks underneath. He spends most of his time in the library where he can be seen roaming around as if he is a ghost. If not on the library, he spends his time on the back of the school, puffing smoke. He likes coffee best. He is impervious to things such as honey traps. He is straight and blunt when it comes to certain things.