Mo the Monster speaks in English and Spanish! And it doesn't use Siri for pronunciation at this time. Regardless the default language of the iPad, players will have the ability to select either English or Spanish by clicking the gear in the upper left hand corner of the iPad. Both the language of Mo's voice, as well as the language in the speech bubble can be selected from these two languages.
For all other languages, the "Asks" themselves (the words in the top right corner that Mo asks you to draw) are localized into your iPad's default language.
We plan to localize the Monster game into other languages besides English and Spanish in the future, and would be happy to send you an email once it's available in your language. Kindly fill out this form here if interested: