The human protagonist Ben is built as an audience surrogate. His age is never mentioned, my best guess is 14 years. He has a mysterious background. His appearance is never described in text, apart from being white skinned. While the book has a few illustrations by the author, so those could give a canon appearance to him, he actually looks different on different pictures. He comes somewhere from Europe, and there are some clues as for where, I'm still not sure what it is.