Born in Mexico City in 1979. He has academic training in social communication and a filmmaking degree from National School of Film Arts of the National Autonomous University of Mexico. Castellanos has participated at San Sebastián International Film Festival workshops, Berlinale Talent Campus and the Morelia-Sundance Screenwriters Lab. His work includes short films like “La Ahorcadita” (2013), “¿Y a Ti, qué Animal Te Gustaría Ser?” (2017) and “Extraños en un Tren” (2019). “We Shall Not Be Moved” is his first feature film.