As befitting to his role as principal of an academy for heroes, Nezu is an eccentric, polite, and persistent educator. He is quite self-aware of his odd appearance and introduces himself by pointing it out. He can be very long-winded at times when explaining or educating. Nezu composed an entire lecture on his educational theories concerning the balance between hero and instructor. His dedication to educating goes as far as assessing villains, especially young ones, and wondering if they could be put on the right path if they were taught, although he admits the naivety of the idea. He is not above putting himself on the front lines or in danger, with his focus being the safety of his students. He understands strategies between hero conflicts enough to participate in the debriefing after the invasion. As a result of abuse and mistreatment by humans in the past, Nezu's true character reveals itself whenever he is in combat. He enjoys "toying" with humans. He still holds a grudge over the many experiments he went through, coming off as slightly insane and unpredictable as a result.

If you could sound similar to his English VA, Jerry Jewell, that would be great, but it is not required!

English VA Example: https://youtu.be/lj8NMu5TnQs -spread throughout this clip