I would disagree. Sentiment analysis is already there. Good text to speech too. Basically one needs to use them together to give the speech engine a clue toward

I would disagree. Sentiment analysis is already there. Good text to speech too. Basically one needs to use them together to give the speech engine a clue towards the required sentiment and the speech engine enough samples to use different intonations for different sentiments. Won't beat a skilled speech artist, but should be more than sufficient for any mediocre quality cartoon. The big upside is instant translation to all the languages supported by the speech engine. Make mediocre cartoons, add speech, upload to YouTube for ten+ different locales, profit.