User blog comment:Prodigy X/Bazz-B Predictions and Theories/@comment-2089817-20131023221957/@comment-5847836-20131119235240

Tessai, Yoruichi, Tōsen, Zommari Rureaux, Jackie Tristan, Ōetsu Nimaiya, Jerome Guizbatt, Najahkoop (maybe), and the eye-staff Sternritter. So that's 8 or 9, 3 or 4 with important roles.

Shouldn't be surprising that most of the characters are Japanese, being as it is a Japanese manga. The same could be said for how few characters are Hispanic, or even Chinese. Still, that is a valid point.