Which linguistic innovation was pioneered by the Tony the Tiger mascot that revolutionized how brand characters communicate with consumers?

Brand mascots don't just represent companies visually - they often develop their own linguistic identities and communication styles. These character-driven marketing elements have evolved significantly in how they use language to connect with consumers across different generations and markets. This trivia question explores how linguistics and marketing intersect in the creation and evolution of modern brand mascots' verbal identities.

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The catchphrase "They're Gr-r-reat!" which introduced stylized pronunciation spelling in advertising to represent enthusiastic speech patterns
The first mascot to use code-switching between English and Spanish in mainstream American advertising
The first character to utilize social media-specific language patterns like hashtags and internet slang in traditional media
The introduction of regionalized speech patterns that changed based on which market the advertisements aired in