Which language learning app experienced the 'character revolt' phenomenon where users refused to update because they were attached to a specific brand mascot voice actor?

Brand loyalty in the language learning industry has created some fascinating phenomena. Companies have discovered that users develop strong attachments not just to learning methods but to specific linguistic personas and mascots. This poll tests your knowledge about one of the most remarkable brand loyalty trends in language learning applications over the past decade and how companies have responded to maintain their user base.

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Duolingo, when users rejected a new voice for the owl mascot Duo in 2019
Babbel, when they replaced their German instructor character with an AI voice in 2021
Rosetta Stone, when they modernized their iconic narrator voice in 2018
Memrise, when they updated their memory character voices across all language programs in 2020