The mono de calenda is a giant puppet used in the fiestas or calendas in the state of Oaxaca.
All the towns’ patron saints festivities in Oaxaca begin with La Calenda, which traverses the streets of the historic center. This is the way in which the procession announces itself and invites the whole town to the party. Important parts of the calenda are the monos de calenda (puppets) or gigantes (giants). These monos are made of a reed skeleton that is covered by clothing, and a head made with paper maché. These gigantes are carried by young people or children; when the music is played, these characters accompany the dance, spinning, maintaining balance and moving the arms of the giant without stopping, such as a swirl of colors.*
Source: https://pedrocruzpacheco.com