At First I didn't like it but
It really grew on me, I can ignore the shy guys now since the Christopher Walkin IMpressions didn't sound different from the other characters what I mean by other Characters I mean like the kungfu guys and Hal the Koopa I think that's his name, I would suggest changing the sound of your voice than just using accents. Then again you are possibly doing trying to do so, just keep up the hard work.