Kevin is played by Ishikawa Hideo. (I read the seiyuu list and I LOST it)
Now I'm going to start merging Ukitake and Kevin and this is NOT PLEASANT.
No no no no no no please no mo~re.
Almost as great as the whole Kakashi/English = English/Allen\Japanese = Japanese\Gojyo (Allen is right there stationed between a 'cool' sandwhich.)