In Hesiod’s Pandora story, Hermes gave Pandora a deceitful mind and a deceptive nature.
The detail appears in Works and Days, where Zeus orders the gods to prepare Pandora as part of his punishment of humanity after Prometheus stole fire. Different deities contribute different gifts: Athena teaches her crafts, Aphrodite gives her beauty and desire, and Hermes supplies a deceptive character and speech. Hermes then gives her the name Pandora.
Hermes is particularly fitting in this role because Greek mythology associates him with communication, persuasion, boundaries, travel, and trickery. His presence does not mean that Pandora is simply an evil character; Hesiod presents her as a constructed figure whose attractive qualities conceal danger.
Later retellings often compress the contributions of the gods into a single act by Hephaestus, who makes Pandora’s body. That simplification can obscure the poem’s elaborate catalogue of divine gifts and the separate role assigned to Hermes.