So many names to keep track of as another group of 31st century characters make themselves known.  The drinking game gets a workout as we meet Thoom, Supergirl and Mon-El crash through lots of walls, time is spent is Brainy’s shadowy lab, we get two reimagined Legion siblings and the credits page is invaded by a slew of unfamiliar silhouettes and a new slogan – “It’s time to show the Legion of Super-heroes who’s boss.”