Don: In the earlier days of limited animation, because of that process, Joe (Barbara) and Bill (Hanna) wanted to depend heavily on the voice of the character to bring it to life because the animation was so restricted. That's where Daws (Butler) and I shined, I guess you might say. That's the reason that those characters developed with such realism and warmth. They have a genuine charm to them despite the limited backgrounds and so forth. The concentration was on the characters, their spoken personalities.