Which major coffee retailer based its famous logo on a mythological figure, and what was the original mythological inspiration?

Throughout history, mythology and folklore have deeply influenced product design, branding, and consumer behavior. Many successful companies have leveraged ancient stories and symbols to create powerful brand identities and memorable products. This trivia question explores how one iconic brand cleverly incorporated mythological elements into its very foundation, creating one of the most recognizable logos in retail history.

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Starbucks - a twin-tailed siren (or melusine) from Greek mythology, said to lure sailors with her enchanting voice
Peet's Coffee - the Norse god Odin, who traded his eye for wisdom and knowledge at Mímir's well
Dunkin' - the Roman goddess Aurora, who brought the morning dawn and represented the start of a new day
Costa Coffee - the Celtic deity Cernunnos, known as the horned god of abundance and prosperity