But what, I’m sure you’re asking, is happening on the racks? As I go through these movies on the blog, I like to check in on what’s happening in the comics that year, because you never know what might happen if you don’t keep an eye on things. For example: in summer 1982, while I was occupied writing about rubber-suit swamp monsters, Action Comics went and split Superman into two half-powered twin Supermans, and they left him like that for eight months.
The gimmick is that in August 1982, Superman is suddenly sucked through the timestream into 14th century England for some reason — “Great Rao!” he observes, “I’m back in the Middle Ages!” — where he gets in between two squabbling wizard spouses who each want to use his invulnerable body to obtain the Power Ultimate, whatever that is. It seems like some kind of domestic dispute.
Lord Satanis stands on one side of Superman, and his wife, the Sorceress Syrene, stands on the other side, and they pull on the Action Ace like he’s a wishbone, and then he snaps in half, sorcerously. Now we’ve got one half-Superman who’s invulnerable and has heat-vision but doesn’t have flight, speed or super-strength, and another half-Superman who’s got flight, speed and super-strength but isn’t invulnerable and doesn’t have heat-vision, and if you ever lose track of which one has which powers, then Superman will spend the next eight months patiently explaining it to you, every five minutes.
Superheroes Every Day 