Lego DC Super Hero Girls: Brain Drain is an upcoming 2017 American animated direct-to-video film based on the DC Super Hero Girls franchise, produced by Warner Bros. Animation. It is the third film inLego DC Super Hero Girls: Brain Drain is an upcoming 2017 American animated direct-to-video film based on the DC Super Hero Girls franchise, produced by Warner Bros. Animation. It is the third film in the DC Super Hero Girls franchise, as well as the first in the series to be based on the DC Super Hero Girls brand of Lego.