Well, I wouldn't say Bartz has no emotion but he is not as well developed as the characters in ff6 in my opinion. I haven't played very far but well, we can see the perverted side of Bartz in the ship graveyard when both Bartz and Galuf tried to undress Faris even though they knew she was a girl from that scene in the inn. I wish he had dashed into that room in the cave to steal a peek of Rena though.