Chiba is a serious, stoic and most calmest boy in Class 3-E who doesn't talk a lot. Like Rinka Hayami, he has been compared to a working adult and although the two are very similar, Chiba is less stoic and speaks even less than Hayami. On the other hand, Chiba is shown to notice the small details of people around him. An example of this trait is when he notices Karma Akabane being glum over his fallen grades and cheers him up by prompting him to insult Korosensei about the Home Economics scores.