He is rather confident and has a big mouth and is very self conscious that he's the best detective in the world. He's extroverted and comical, yet he gets bored quite fast and needs constant entertainment. He's smart and teases Poe a lot as a joke. Poe and Ranpo are supposed to be rivals, yet Ranpo doesn't see it that way since Poe is his admirer who keeps running after him like a dog which Ranpo very much enjoys. He can be quite flirty deep down, yet nobody knows of that secretive side of his.