Apate

In Greek mythology, Apate (Greek: Απατη, "deceit" or "fraud") was the daimona of deceit, guile, deception, and fraud. Apate was a daughter of Nyx, although some sources give her as a daughter of Erebus and Nyx. She was a companion of the Pseudologoi, the counterpart of Dolos, and the opposite of Aletheia.

In Roman mythology, Apate was closely equated with Fraus.

Mythology
When Zeus was having an affair with Semele, Hera sought the help of Apate in punishing the mortal woman. Apate gave Hera a girdle which Hera used to trick Semele into asking Zeus to grant her one wish. After making Zeus swear by the River Styx, Semele asked to see Zeus' true form. He had no choice but to honor her wish and his true form killed her.