Krantz Rosen is a young man from France who serves as the manager and, by his own description, the babysitter for Licht Jekylland Todoroki. He has green eyes and long beige hair that is braided to the left side. Multilingual, he speaks French, English, Japanese, and German. His personality is that of a dedicated and polished gentleman who takes his work seriously. He is consistently focused on keeping Licht and the vampire Lawless, also known as the Greed Pair, under control. When they misbehave, he does not hesitate to scold them. In this effort he frequently collaborates with Guildenstern, Hyoud’s manager, to ensure both members of the pair are kept in line. His motivation is rooted in professionalism and a no-nonsense approach to his responsibilities, acting as a steady, guiding presence for the often chaotic Licht. Over the course of the story, he displays a more sympathetic side, notably feeling sorry for Lawless after learning that the vampire has been unable to move past a lost love for over a century. While he has no supernatural combat abilities, his notable skills lie in organization, multilingual communication, and the ability to manage difficult personalities.