Liu Yiwu

While at first he was the least characterized officer in the Annex, usually staying in the background and not standing out too much (despite being the tallest person in the Annex), after his betrayal was exposed, he revealed his confident and ruthless personality. He has shown to be tolerant of his subordinates minor blunders (such as Hong's), but he also has showed respect to a fallen adversary (Alexander Asimov).