Actors who say they can dive inside a character are either schizophrenic or lying.
I see parody as another form of comedy. If you are making a comedy, there are a lot of different ways to do it. I'm not necessarily always aware of my quote-unquote persona when doing things like that. It's more, "What does the character need at the time?" I'm certainly drawn to certain types of material, there's no doubt about that.
I've always enjoyed playing a little left of center characters. Otherwise I'd be on a soap opera.