Which gaming mascot generated the highest merchandise retail sales in a single year, becoming a landmark case study in gaming brand extension strategy?

Gaming mascots have become iconic symbols that represent their brands and create lasting connections with players. These virtual ambassadors often transcend their original games to become cultural phenomena, appearing in merchandise, cross-promotions, and even other media. This poll tests your knowledge of how gaming companies have leveraged mascots as part of their brand identity strategies and marketing efforts. Can you identify which famous gaming mascot made the biggest retail impact?

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Mario (Nintendo) - $2.1 billion in 2016, with the 'Let's Super Mario' campaign tied to the franchise's 35th anniversary
Sonic the Hedgehog (Sega) - $1.8 billion in 2020, following the successful movie adaptation and accompanying retail strategy
Pikachu (The Pokémon Company) - $1.9 billion in 2018, during the Pokémon GO retail partnership expansion
Master Chief (Microsoft/Halo) - $1.5 billion in 2021, with the omnichannel strategy supporting Halo Infinite's release