This week Arena patrols the skies above Metropolis in search of the legend that is SUPERMAN ... Meet Kirk Alyn , the first celluloid-Superman and Christopher Reeve the latest; Dr Fredric Wertham , Superman's greatest living adversary; Joanne, the model for Lois Lane ; Dave ' Darth Vader ' Prowse, who turned a 13-stone weakling into The Man of Steel and, for the first time on British television, Superman's creators, the legendary Jerry Siegel and Joe Shuster.