On the left hand he is pondering about something he’s got in his hand. He might be reading something on his phone which would be completely lost in his big hand…
The middle one is something really stranged that happened when I duplicated him and moved the clone. Apparently this happens when you don’t duplicate the bones along…
(Selecting the root bone and duplicating incidentally just made a copy of the bones as well, so you do need to select them both.)
Since running seems to be a common pose, I gave that one a try, too…
Moving for a good pose is definitely something I would eventually need some more exercising on…