The problem with your edit is that the hand is too big and out of proportion with his small head. I agree that Tuna's doesn't look like a hand, though.
To be frank, I never really liked the suited guy. His pose is awkward, his foot is at a weird angle, and to be honest I don't think I can see a character (even if he is an NPC) standing like that in a game.
Otherwise this is looking nice, but I think you should go for less of a 'dynamic' pose and try to communicate the pose so it's believable, in character, and helps let the two characters seemingly exist in the same world.