Bartemius "Barty" Crouch Senior is the Head of International Magical Co-operation. He has short grey hair with a neat parting, which is described as "almost unnaturally straight", and a narrow toothbrush moustache. In certain lights, such as in semi-darkness, he took on a skull-like appearance. He had a reputation for "fighting fire with fire", exhibiting the sort of ruthlessness and brutality against criminals that could be compared to some Death Eaters to their victims.