Nagual, a concept originating from Mesoamerican cultures, refers to a shapeshifting being or a dualistic persona. There are several synonyms for the term "nagual" that relate to these themes, such as "tonal," which refers to the solid, stable persona of a person, and "nahual," which describes the spiritual aspect of the individual. Another synonym for "nagual" is "shaman," which denotes a person who has the ability to communicate with the spiritual realm and has the power to shapeshift. Additionally, the word "transformer" is often used in place of "nagual" to describe individuals who have the power to change their appearance and alter reality.