Gegerboyo is a collaborative project between Vendy Methodos, EnkaNkmr, Dian Suci Rahmawati, Ipeh Nur and Prihatmoko Moki, and was established in June 2016 in Yogyakarta.Gegerboyo is much inspired by traditions of Javanese culture, urban culture, the relation in between and the correlation with the current socio-political phenomena. In one of their project called “Tan Hana Dharma Mangrwa”, Gegerboyo works on panji or pennant-or flag, and sumbols commonly used on a pennant or a flag, as a visual reference to their work and it also shows conceptual exploration related to the symbols and the function of the pennant as identification of a particular group, and its historical juxtaposition with war. Historically, pennants or flags were closely related to war, and Indonesian word for flag ‘bendera’ came from Spanish bandera which means ‘flag’ and could also be interpreted as ‘a battalion- equivalent in the Spanish Legion’.