Seen a few posts where Superman thinks Danny is his clone.

But what if it was Dan instead of Danny?

Dan doesn't look exactly like Superman so the JL think that Batman and Supes DNA got mixed, the proof is in the matching scowl.

And Dan's like "Well, I've got nothing better to do, so why not? Lets mess with this guy."

The second Dan learns about Connor (and Supe's treatment of him.) it becomes personal.

Goes out of his way to ruin Superman's Day.

Looking awesome while saving the day? Nope, his cape gets wrapped around his head and then that picture gets into papers and every social media platform.

About to hand over thug? Mysterious farting noises.

and so, on so forth.

JL: So we just need some blood for a DNA test.

Dan:...Sure.

Later

Dan: Hey Clockwork you mind messing with some test results for me?

Clockwork: Already done.

Meanwhile Batmans out there trying to be a good dad to his clone son and trying to introduce him to the family while also hoping that Clark doesn't screw anything up.

Clockwork agrees because he knows that Alfred is going to mother hen this boy so hard. Dan is about to become fully adopted into this crazy family.