Peter, Octavia, Robin, Helen and Alex Tritthart, also known as HARPO Studios, are a German family of brickfilmers. They have released brickfilms sporadically between the years 1985 and 2010 and are best known for Ein Koenig Reich, Krieg der Steine and Von der Rolle, as well as for being among the first German brickfilmers. Including their live-action brickfilms, they have one of the the largest known spans of brickfilming activity at 25 years.