What is mist in percy jackson

Answer: Supernatural mist that disguises the identity of gods, goddesses, demi-gods, and monsters from mortals. To other mortals, the gods, goddesses, demi-gods, and monsters look like mortals.

The Mist is a supernatural force controlled by the goddess Hecate that twists a mortal's sight from seeing monsters, gods, Titans, and other supernatural occurrences by replacing them with things the mortal mind knows about and can comprehend.