Favorite Band: Queen
Ishiwatari has directed, designed, written and composed the music for every Guilty Gear game to date. He is the main character designer of the Guilty Gear franchise. He was also the voice of Sol Badguy in the first two Guilty Gear games, later replaced by Joji Nakata who has voiced Sol since Guilty Gear XX.
Ishiwatari has also composed the music for every BlazBlue game to date.