A genius of "Knowledge." A walking encyclopedia. For example, he can instantly point out that a watch left at a crime scene is a limited edition, where it was sold, and from which month of which year, providing immediate clues to the culprit. His erudition is at a level where it's no exaggeration to say there is "nothing he doesn't know." This is not due to "memory power" but rather "organization skills." The human brain inherently "forgets nothing." The true nature of his ability is the pinnacle of the technique of "how to store" and "how to retrieve" those miscellaneous things. Since he simply "already knows" what could be "found by looking it up," his ability lacks flashiness despite his appearance, but he leaves a vivid impression on those involved with his unique tone and sarcastic delivery. He is an absolute egoist, acting as if he is the only one who matters in the world. Though he is unaware of it, he is prone to loneliness. His second-person pronoun is "you" (arrogant/hostile), and he sometimes refers to the recorders, Gonbei and Jun, as his "servants." Furthermore, while he is oblivious to it, he has a side that naturally charms people. He takes a haughty attitude toward everyone, but once he lets someone into his inner circle, he often shows consideration for them (though it is hard to notice). He has some knowledge of martial arts and is better at cooking than his two attendants. He is an exceptionally good waker. Usually, his behavior is nothing but looking down on others, but his skill as a Single Record Holder is the real deal; he can reach the truth with even the slightest clue. Because of his vast knowledge, his vocabulary is high, but his insults are at the level of an elementary schooler. He is basically dexterous and can handle anything, but apparently, disguise is the only thing he is poor at (even though his imitation should be perfect, he gets caught because of his "aura").