Complex sentence: A mysterious and muscular militant revolutionary excommunicated from the League of Shadows portraying himself as a "liberator of pain", who is desperate to continue Ra's al Ghul's legacy by destroying Gotham.
Split into simpler sentences: A mysterious and physically imposing revolutionary who was excommunicated from the League of Shadows and portrays himself as a "liberator of pain". He is desperate to continue Ra's al Ghul's legacy by destroying Gotham.