At this point you all know how I feel about this. It ain't worth going into. Instead I'll play along. Because I've actually had my own ideas on how I'd handle an adult Jon for a while now. Pretty much since that Super Sons of tomorrow arc. Of course those ideas involved Jon NOT being Superman. Because there's only been a grand total of two times where I've been okay with a sidekick growing up to replace their mentor (and in Dick's case, I was only okay with it because it was pretty obvious that it'd only be a temporary thing) But, for the sake of the thread, I can make some adjustments.
So skipping over the codename thing, because he's "Superman", the first thing I'd do is find ways to make it
very clear that he is not just young Clark. That's been my biggest problem with him since this age up began. Dude's gonna be his own thing. His own Superman. Having him take on the mantle just for him to look like Clark and do all the same things Clark does is pointless. For all that, we might as well have kept Clark.
One big change: The costume. The blue spandex and red cape gotta go. I actually really liked his design at the start of Bendis run. If you all recall, that's the one compliment I've ever been willing to give to the aged up Jon. He looked REALLY good. But then they went and ruined it by giving him costumes and hair cuts that are more reminiscent of New 52 Clark. And now that he's on the road to becoming his own man, we're nixing that. Even the costume that I liked. Hell, maybe he even gets his own color scheme, the same way Conner has become more associated with black and red. I don't have any ideas that I'm 100% sold on but maybe he takes some cues from Conner, and even his younger self, and goes for a more casual approach. I always envisioned kind of an
early 2000s skater or even a hipster kind of fashion (without going too "douchey"). But those are heavily dependent on how old this Jon is. If we're going with his late teens to early 20s then maybe.
Next, Metropolis. He ain't staying there. At least not for like 50% of the time. One of the big revelations he has after becoming Superman is that Clark and Bruce were going about things all wrong by trying to take on the brunt of the work in one city when they have an entire support system of family and friends to draw from. So he works things out with Kara, Conner, and both Steels (possibly even Damian, Maya, Kathy, and Boyzarro) to protect the city in shifts. There's always gonna be at least two heroes watching over Metropolis at any given time. Jon has a great deal of respect for the city that helped make his Dad a living legend, but he wants to focus more on expanding his horizons. Traveling to new places, experiencing new things. He wants to be
the world's Superman. Not just Metropolis'. So a lot of his adventures would involve him just traveling around the world by himself (for now...I'll get into that later) or with Krypto, having a good time, discovering who he is, helping people in need, and stopping whatever crimes he stumbles upon. Basically the superhero equivalent to those young adults who travel right out of high school instead of going to college or going into the workforce. This way he has a chance to assemble a much more diverse supporting cast and it could even lead to a lot of fun crossovers with other heroes.
Career-wise, because being a superhero is not a job that Superman should be making a profit off of, he definitely does something to make money that doesn't require him being glued to one spot.
Definitely not journalism. And not anything that has him confined to an office or anything that a typical 9-5 job entails.
I don't know. Maybe a freelance photographer or a vlogger/social media influencer. Hell, maybe one of those youtube musicians like Nathan Sharp or Jonathan Young. Ever since that one panel of Clark teaching him to play the guitar, I've always kinda headcanon'd that those two can sing lol. Anything to inspire hope/positivity via the internet and social media should be right up the alley of any modern Superman. Especially one who's focusing on more than just Metropolis. It's one of the best ways to connect to the people you've sworn to protect, all over the world. Hell, it might even be an easier way for him to find people who need his help.
As for his personality, again, I wanna get away from the "Clark Jr." aspects. If I wanted that, I'd just read more Clark books. At this point in his life, Jon's decided not to be overly stressed about living up to any legacy or even what the people think of him as a new Superman. He wants to focus on who he is, not who he's replacing. Love him or hate him, he's just a guy who's out to help the world and enjoy life. He's not high strung or overly proper. He's still got that politeness and humbleness that you'd expect from a Kent boy. But he's also got some wit and attitude from Lois. Overall he's much more...free spirited, relaxed, quippy, even sarcastic. Dude's basically Sonic the Hedgehog.
Obviously Jon has the same powerset as Clark. But there is one thing I'd like to see him get more use out of. His solar flare. That seems to have been kind of...forgotten. I want him to not only learn how to keep it from going out of control, but how to channel it into more than just explosions. Energy blasts from his hands, force fields, boosters for his other powers, ect.
Overall, I want the same feeling from Jon as Superman that I used to get out of Jon as a Superboy. I want him to be fun. I want him to
have fun. To enjoy being a hero instead of feeling like it's a burden that's been passed onto him. With Clark out of commission (I guess), Kara's the next logical head of the family now. So he's cool with letting her be the more traditional "Superman". She can be Metropolis' main champion. She can have the Justice League. She can have the Trinity. Jon's more concerned with being his own kind of Superman.
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There is one more idea that I have but I'm kinda back and forth on it because it feels too similar to something else. You'll probably start to understand as I explain it a bit more. If Jon's Superman now and Conner, in this scenario, has moved on to his own identity....that means the Superboy position is up for grabs. I thought a possible candidate could be Lor-Zod. If I recall he's still out in space with his parents and would be significantly younger than Jon at this point. Maybe he goes to earth to take out Superman in an attempt to make Zod happy (or to show he's superior to Zod. This could be a couple years later so he's 13-14 and going through a teen angst phase), only to find out that there's a new Superman. He figures "any supes will do" and becomes a bit of a reoccurring adversary/annoyance for a while before Jon gets fed up and basically tells him "Look, dude. You only hate me because our Dads hate each other. I'm not my Dad. And you don't have to be yours. You're like a million light years away from him right now. Get a life. Get your own life."
It takes a few more clashes for it to sink in but, eventually, Lor actually starts taking what Jon said to heart. Carrying on his father's old grudges (and failing just as spectacularly as he has) wasn't getting him anywhere. It certainly wasn't making him happy. So at the end of their final encounter as enemies (which, of course, ends in failure yet again), Lor finally breaks down and asks Jon for help. He doesn't know what he needs help with. He just knows that he needs help. Being the sap that he is, Jon can't just turn away a crying kid. So he lets Lor tag along with him and Krypto on their random adventures so the boy can figure out what he wants to do with his life now that he's no longer under Zod's thumb. The two start to grow a bit of a brotherly bond with each other (the kind that I wish Jon and Conner had gotten to have) and eventually Lor just straight up becomes the next Superboy.
The only reason I'm hesitant about this idea is because the whole concept sounds a bit
too similar to Dick Grayson and Damian Wayne. Like, there are plenty of ways to make it different enough but the premise itself feels a little too close to that.