You can say a lot of things about DC in the Silver Age, but you can’t accuse them of being stingy with the Superman.
Not just because Superman himself was starring monthly in two comics of his own, plus World’s Finest, Justice League, Superboy, Adventure Comics, and eventually DC Comics Presents, but because there were even different versions of the guy running around. Even putting aside the -girl, -horse, -monkey and -cat, you had the standard model, Superboy, the alternate future Superman Jr., Supermen Red and Blue, and Superbaby, who was presumably targeted at whatever degenerates were out there demanding more stories centering on poor grammar.
Which brings us to yet another Super-Doppelgänger:
Yes, The Superman of 2965, whose story can be found in the recent Superman: Past and Future, which also includes the absolutely essential stories of Lois Lane’s romance with Superman’s dad and that one time that Jimmy Olsen met Hitler. And really, after those, this guy doesn’t seem all that odd, but he raises his fair share of questions.
First and foremost: Why? Klar Ken T5477 (because, see, it’s the future!) was created by two of the greats, Edmond Hamilton and Curt Swan, for what appears to be no reason whatsoever. I mean, it’s not like there weren’t already a ton of stories about Superman rolling around the 30th Century or anything. And beyond that, there’s just no point. Seriously, 2965 here has no differences from his 1965 counterpart: Same powers, same costume, same haircut, heck, he even has the same job, working for the Daily Interplanetary News Service with future analogs for Lois, Jimmy and even Perry White.
Although to be fair, Perry is now an awesome robot:
Of course, the PW-5598 would fall out of favor by the 2970s, when it would be largely replaced with the J. Jonah Jametron.
There are a couple of differences, though. Superman-2965’s Fortress of Solitude is an invisible satellite first located in space, then later in the heart of the sun–an idea that Grant Morrison swiped for DC One Million–and… well, that’s pretty much it.
Except that he’s also completely immune to Kryptonite:
Instead, the Superman of the Future has developed a another weakness:
Yes, that’s right:
So, to review: We have been given a far-future Superman who is exactly like regular Superman–to the point where he teams up with far-future Batman to fight far-future Joker who has exploding water while protecting his secret identity from far-future Jimmy Olsen–except that he can be killed by a substance that covers three quarters of the planet.