Complex sentence: Hercules (also known as Heracles) is the main protagonist of the film and the TV series who is based on the mythical character, although some aspects of his life differ greatly from the original legend.
Split into simpler sentences: Hercules (also known as Heracles) is the main protagonist of the film and the TV series. He is based on the mythical character Hercules, although some aspects of his life differ greatly from the original legend.