French photographer Sacha Goldberger's Mamika is a series of photographs portraying his grandma Frederika in a superhero costume. In this Mamika series, Frederika conveys the message of hope, joy and self-confidence.

The idea of Mamika came when Sacha discovered that his 91-year-old Hungarian grandma was depressed and feeling lonely. He persuaded Frederika to take part in this series in unusual costume and different poses. Check some images of bold grandma Frederika in the featured gallery.