And what about the arrow?
It’s pointing down diagonally, which - at least to me (and for pretty much any GUI I can think of) - indicates, that it should be affecting both axes.
Then again, that whole illustration isn’t all that great to begin with. So who knows, what that arrow is supposed to signify…
I’d go for Kirk.
He might not have the most interesting personality, but he seems like a sweet guy, who can enjoy the little things and who will also join you for the occasional adventure.