The Mayantu is a fey-like creature with the face of a frog that lives in the Amazon rainforest. According to Iquitos legend, the Mayantu are said to be found living high up in the canopy of giant trees, such as the Kapok tree. Unlike many other magical inhabitants of the jungle, the Mayantu is not evil, and even comes to the aid of humanity when they are in trouble and need assistance. Therefore, the Mayantu is frequently referred to by the people of Iquitos as "the good god of the jungle." However, the Mayantu will not help those who come to the jungle to destroy it or harm its inhabitants.
In addition to being an Iquitos legend, the native Yagua Indians also believe in this mythological being. Interestingly, the indigenous Amazonian Yaguas still worship this magical deity of the jungle. In addition, the Yaguas say that the Mayantu possesses the knowledge of the medicinal plants of the jungle and can use these plants to heal; Therefore, for the Yagua, the Mayantu is a "curandero" (one who cures).