My choices are going to sound odd, but here goes...

Nicodemus - Jean Reno. For some reason, whenever I was reading about Nicodemus in the books, I would see Jean Reno in my head.

Morgan - Sean Bean.

Kincaid - Daniel Craig. Once again, it's who the character always resembled in my head.

Pat Morita would've made an awesome Shiro, but he's dead, so no go there.