Aizawa, Present Mic and you

Shota is a very stern and reserved man who has lofty expectations of his students. He is primarily motivated by logic and does not believe in the necessity to maintain a clean-cut appearance or filter his words or ideas for others. He often comes off as cold, apathetic, and impatient, exerting very little energy in most situations, preferring to take naps in his sleeping bag instead. As a teacher with notoriously high expectations, Shota is known to expel students who he feels are not suited for U.A. High. However, it's revealed that this high expulsion rate is only on paper and that he actually re-enrolls the students he expels: Shota does this so they can experience "death" once, giving them an experience that drives them to push even higher. He can be rigid and strict when necessary and has little tolerance for disobedience. Shota is not afraid of putting his students through rigorous training and often pushes the more unpleasant parts of Heroism, so that his students can overcome their limits.

Shota has proven to be very vocal and unafraid when expressing his ideas. He has mentioned on several occasions that some of U.A.'s choices when it comes to examinations are not practical or challenging enough for real Hero hopefuls and is adamant about having certain systems used by the institution changed. Despite his apathetic traits, Shota genuinely cares about his students and will go to great lengths to protect them. He has also expressed belief in his students on multiple occasions and is confident that even the likes of Katsuki Bakugo would not be swayed by villains. Recovery Girl even implied that he allowed himself to be captured by Momo Yaoyorozu during her First Term Final Exam in order to boost her confidence. Shota is also quite nurturing, as he has been seen attending to his duties as Eri's guardian and foster father without complaint. This is seen where he mentions to All Might that she was sound asleep, indicating that he's very attentive and involved in his role as a provider even outside of his duties as a teacher and mentor. Despite his personality, Shota has shown on several occasions that he is not completely devoid of joy or humor: he often grins whenever he is impressed by one of his students or after he tricks them with one of his 'rational deceptions'.

Hizashi maintains the eccentric persona of a radio host. He often poses when he talks and maintains a certain level of excitement or volume, regardless of the situation. His attitude made Kyoka Jiro mistake him for a simple announcer, rather than an actual Pro Hero.[3]

When in front of a crowd of people, he often attempts to bring his audience up to his level by getting them involved (he sometimes refers to them as his 'listeners', even while on a live stage). He will continue to act this way regardless of the crowds' response. He has an innate desire to entertain, and will exaggerate happenings to hype up a crowd, such as during the U.A. Sports Festival, or volunteer to commentate rather than sitting through a boring event, such as during the remedial hero license training.

He has a great aversion to bugs, to the point where he faints when too many are in his general vicinity. He admits to much preferring urban areas to forested ones.

Though he tends to be a jovial individual, Hizashi is capable of great rage as demonstrated by his reaction to discovering that Kurogiri is a Nomu created from the corpse of his late friend, Oboro Shirakumo and his confrontation with the man responsible, Kyudai Garaki. He expressed further grief and outrage over how the doctor's scientific gifts and knowledge could have helped humanity, but that he instead chose to use them for evil. Much later, he angrily punched the man for what he did to his friend.