My dad learned French from Asterix after he married my (French) mum while spending summer's out there with her family. Coincidentally in Provençe.
I wonder if the mix of pictures along with uncomplicated but correct dialogue makes Asterix popular for promoting languages.
Asterix seems to be a favourite for minority languages. There are seventy Asterix albums published in German regional dialects: https://www.asterix.com/de/die-buecher/die-asterix-mundart-r...