Supoo is part of the baseball club, he's friends with Charao and Otao and isn't very talkative. Hes the tallest person in class and is seemingly chill. for voice reference please refer to The Audition Processes part of the description. Supoo should have a medium pitch mature sounding voice. He should sound like you sort of typical tough guy, though of course not too over the top as he is just a high school student. you could also try whatever you like. I recommend using the anime as reference.  https://www.youtube.com/watch?v=T2zp_-kPLdg. voice at 11:28