Megumi is a very outwardly stoic, aloof, and calculating individual. He usually has a neutral facial expression that he rarely changes, making it appear as if he takes every situation seriously. This contrasts heavily with Yuji, Nobara, and Satoru's outgoing and goofy personalities, which often annoy Megumi. He's easily irritated and Yuji has noted that Megumi seems like he's always slightly angry.