Leon is a passionate, hot-blooded young teenager. He often slacked off from studying and baseball practice; however, his baseball skills were never diminished due to his status as Ultimate Baseball Star. In fact, he hated to practice, seeing no point or enjoyment in it because he was already so talented. Due to his natural physical talent, he considered even very difficult and unusual feats easy and had some trouble empathizing with people who lacked such talent. Despite his talent, Leon claimed he strongly hated baseball and was very determined to change his current title to Ultimate Musician. He had a tendency to complain about the several things he found uncool and gross about baseball, often without any prompting from others. He was quite arrogant, often talking about his popularity and dreams of being even more famous, considering himself a 'future superstar'. Furthermore, he was quite bitter about how people constantly forced him to play baseball and follow the sport's traditions due to his natural talent, with his completely new goal and look appearing to be at least partially a form of rebellion.

However, in reality, Leon grew to miss baseball after not playing for a while, since he used to do it every day since he was young and it actually made him feel good. With all his talk about hating baseball, he was embarrassed to admit how he really felt and accused baseball of brainwashing him. He liked the idea of an all-new approach that is just for him, showing that he just disliked repetitiveness and other people deciding things for him. He was also strongly interested in girls and bragged about his great success with women to Makoto, asking him if he was jealous. He was always flirting with girls and he was single-mindedly focused on studying "the secret of success with the ladies". He appeared quite shallow, as he often only talked about how hot girls are, but he has also mentioned he's into pure-hearted girls. In the official artbook, Leon is described as an optimist who wants to get better at everything he does. However, during the main story, Leon was shown to be easily intimidated due to the killing game situation. When he became nervous or intimidated, Leon tended to smile awkwardly, often the right corner of his mouth stretching farther. He could also come across as easily offended and agitated.

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

I don't have any English VA examples as there is not many I can find on Youtube, so if you could try and match the dub voice, it would be great, but again, it is not necessary.