Which famous mascot did Duolingo introduce in 2019 that became a viral internet sensation and is now central to the brand's marketing strategy?

Duolingo has transformed language learning with its gamified approach and accessible platform. Beyond teaching multiple languages to millions worldwide, the company has made some fascinating business decisions and marketing choices that have contributed to its remarkable success in the language learning industry. Test your knowledge about this language learning giant that has changed how we approach linguistic education.

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The menacing green owl named Duo
The multilingual parrot named Lingo
The scholarly fox named Webster
The globe-trotting penguin named Babel