>>84632544He's in Morrison's Action run, he's got pretty much one issue to himself, a back up. I forget who wrote it, but he was also in a few other issues.
No, I mean obviously Lois and Clark both had plenty of experience in 2000s with Krypto but he was last staying with Conner and Martha in Smallville right before the Black Ring arc. I can't remember if he showed up in that or not, but pretty much the entire Super Family did, even Steel so I'm sure he must have.
Jon's never met him, although given his curiosity, he maybe saw photos or something about Superbro and his dog? Like one of those "Superheroes, they're just like us" with Clark taking Krypto out for a moon walk....