Which mythological figure's name has been used as a successful product endorsement that increased sales by over 300% when it was introduced in the early 20th century?

Throughout mythology and folklore, gods and legendary figures were often associated with specific objects, weapons, or symbols that became synonymous with their identity. These divine 'endorsements' were some of the earliest examples of product association with powerful figures. Test your knowledge about these ancient product endorsements and see if you can identify which mythological figures were truly linked to these legendary items.

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Ajax (Greek warrior whose name was used for a cleaning product because of his 'strength' to battle dirt)
Hercules (Roman hero whose name was used for a line of work boots emphasizing durability)
Mercury (Roman messenger god whose name was used for a delivery service promising speed)
Thor (Norse god whose name was used for a power tool line emphasizing hammering force)