Yuji Kobari  

Master, マスター

The character commonly referred to as "Master" is also known as such by others. This individual owns "Harrys," a cafe that members of STN-J often visit, including Robin, and even worked at during one mission. Master offers valuable information about characters like One Eye, and he has a son who was shown in an episode. His son is also a witch. In Japanese, he is voiced by Hirotaka Nagai, while Jerry Gelb provides his English voice.