A bit of early anime with decent, not great, animation, a bit of Mr. Roboto in the theme tune and a great story (well, an old one, at least), all made for a great show to watch as a kid. Will now go see if it is on DVD.
It is the 31st century. Ulysses killed the giant cyclops when he rescued the children and his son Telemachus. But the ancient gods of Olympus are angry and threaten a terrible revenge.