Hearthpwn

I apologize in advance for mistakes, because English is not my native language.

This mouse appears on many art and latest trailers. Who could it be? Maybe one of the developers or a professional player?

Your theory?

Images:

https://imgur.com/gallery/JrdNU

Maybe it's supposed to symbolize us, like the mouse we use to control the cards

other than that I don't fucking know 

Nice catch, this is the first I've noticed it. I doubt it means anything though. It's probably just a little cameo that Blizzard does for fun.

It's the Innkeepers companion:

https://www.reddit.com/r/hearthstone/comments/535jvn/til_the_innkeeper_has_a_pet_mouse/

http://hearthstone.gamepedia.com/The_innkeeper#Notes

it's possible ;)

but I would like to believe that it at least means something XD

Quote from OliVanBont >>

It's the Innkeepers companion:

https://www.reddit.com/r/hearthstone/comments/535jvn/til_the_innkeeper_has_a_pet_mouse/

http://hearthstone.gamepedia.com/The_innkeeper#Notes

Oh, thx)