I'm referring to the Post-Crisis Superman specifically, he's been around since the 80's but still looks pretty young.

Being a Kryptonian, his aging slowed down immensely when he reached physical maturity. How old do you think he was when his aging slowed down drastically?

Around late 30s or early 40s i would say. He looks considerably older than New 52 Superman who was on his early 30s prior to his dead.

@thekinfing: But it is so strange that Lois hasn't aged much either.

@thekinfing: Do you think Rebirth might have de-aged him and Lois? Lois still looks very young, early-30s, and they are supposed to be the same age.

@morgatu: No i don't think Rebirth de-age them, Lois looking like she's on her early 30's is mainly artistic mistakes, though there are also several instances where Clark and herself are drawn to be noticeable older than their New 52 versions. Also it's worth mentioning that during Action Comics #965 - Lois Lane, Back At the Planet Part 1 Pre-Flashpoint Los stated that she couldn't replace her New 52 counterpart on the Daily Globe mainly because Jimmy, Perry and the rest of the workers will notice the age difference between her and the previous Lois. It isn't much but it does show that writer acknowledge the age gap between the Pre-Flashpoint and New 52 versions of the characters.

@thekinfing: Good to know that characters do actually age, she and Clark were in their mid-20's when they met.

45

@darkhoudini: nope

PRIME YEARS Superman so mid 20s because his PRIME KRYPTONIAN GENES activated by the sun's rays allows him to remain PRIME so he doesn't get wrinkly and washed up and the masses still love him

40-45 Years