IIt's true. My sister and I are going to Japan to live with Seth, our cousin. Also, he downloaded Japanese versions of all of our favorite shows.... If you wanna know what a Class of 3000 character sounds like in the Japanese version, here they are-

Sunny (Genji) - Same as American

Li'l D (Toi) - Sounds a bit like Andre 3000

Tamika (Muraski) - Her voice is too low

Kam (Yang) - A great Korean accent

Kim (Ying) - See Kam (I think She and Kam still have the same voice actors)

Phil (Hiroshi Hiro) - Sounds too aggressive (He has the same voice as the Korean Scar)

Eddie (Menji) - Slight hint of a German accent (Sounds nice though)

Madison (Yoko) - Don't even make me get started on her voice....

EDIT- Added their Japanese names.