Which mythological creature inspired the name of Amazon's product innovation lab that developed their voice assistant technology?

The world of mythology and folklore has become a rich source of inspiration for product development and brand identity in the digital age. Many e-commerce platforms and retailers leverage these ancient narratives to create compelling brand stories and product lines. This trivia question explores how one major online marketplace has incorporated mythological elements into their product innovation strategy.

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Lab126 (named after Hydra, the many-headed serpent representing multiple ideas)
Lab126 (named after Phoenix, symbolizing rebirth and transformation)
Lab126 (named after Alexa, the ancient Greek guardian of knowledge)
Lab126 (named after Cerberus, the three-headed dog guarding multiple technology pathways)