Wolfgang Woerns

Commander of Watcher's Nest, German officer Woerns is rarely seen without a serious scowl. Given the limited success in containing the Ghoul so far, he is charged with the difficult and thankless duty of simply holding out as long as he can. At age 50, there are rumors that he's considering Ertiana to replace him, despite threatening her with discipline when she has trouble containing Misaki's nervous breakdown. from wikipedia