Of course Jezza is the principal
character* of the show. Not sure if it's everywhere like that, but when the show is translated and dubbed for non-english speaking viewers there's A LOT lost in translation. A whole lot! Basically the hamster and May fade away deeply into the background. So I just avoid ukrainian or russian translated versions of the show.
Which one is my favorite? Well, I'd say that Hammond is very good, but the least interesting for me
(since I'm not gay ). May is the very underrated one, and Clarkson really makes TopGear Top Gear.
Oh, and clearly the TG Dog is the cutest of them all.
___________
*I used this word on purpose since TG has more than just presenters or motoring journalists. They're charachters with their scripts and all the stuff, it's much, much more than just a TV programme about cars. And the characters have their personnalities, everyone has a set of distinctive features (to be laughed about by the other two). They are like real themselves but more exagerated and rediculious, I think. Other characters like Stig and the stuntman are characters too, but w/o revealing thei real identity... not sure about the dog though