Koji Utazou is the SHSL Voice Actor and a supporting character.

Koji is very self confident, always using different voices if it's not serious. Dispite being self confident, he's also not that bright.

Koji is Multilingual, speaking English, Spanish, Italian, and Japanese. While the person voicing him doesn't need to know the lanuages as he doesn't speak them often, they do need to learn how to pronounce the sentences.

I imagine his regular speaking voice being slightly deep and laid back. The person voicing him will also need to be able to do a range of voices, but none are specific. As all other roles, you have creative freedom when it comes to the voice!