Onyx Equinox is a Mexican-American adult animated television series created by Sofia Alexander for Crunchyroll. It is based on the mythologies of Mesoamerica, featuring deities of Aztec, Maya and Zapotec myth, while also making references to the Olmecs.

The series premiered on November 21, 2020. Alexander said that she hoped that fans of Western animation would "see the appeal of action-drama animation for adults." While Alexander was initially nervous about pitching the show due to the lack of "stories about Mesoamerica," a Crunchyroll executive, Marisa Balkus, loved the pitch, and the show became "the first original series to be produced entirely out of Crunchyroll Studios."