Vlad isn't a hero. He never has been, never wants to be one.
But if he doesn't step up then an actual hero is going to die. One that the world actually needs, unlike his delusional godson.
He'd been attending an Inventor's conference, when things had well and truly gone to shit.
An AI that Lex Luthor was making had taken control of the weird elephant robot Jack and Maddie had made, which had then forcibly amalgamated the weapons Vlad had made and the shields Wayne Enterprises had brought along and...well.
It was kicking Superman's ass.
Because, apparently, Ecto behaved as a subdued version of Kryptonite.
Which was very bad, because the guns it was using fired Ecto-shots instead of Plasma.
Which is...possibly world/Realm ending levels of "not ideal", because in all his travels of the Realms, he's never heard of one that survived for very long without Superman.
And he's rather attached to this Realm, because he happens to live in it.
He can't transform into Plasmius, there's no time.
Instead, he steps out from cover and grabs one of the anti-tank guns from a nearby table...and, as gently as he can, slides it behind him to Jack and Maddie. They'll know what to do.
If anyone can modify a weapon to the extent that it could be considered a violation of multiple treaties in less that ten minutes, it's those two.
He hates this. He hates that he has to do this.
He isn't a hero. He doesn't want to die like one.
And those weapons will kill him, if they land a hit. He knows. He made them, after all.
What follows is him drawing the modified Killer-Robot's attention and dodging shots, pulling it away from Superman until either someone qualified to deal with a technological threat like this appears, or until Jack and Maddie finish tampering with the gun.
But Superman isn't getting up.
Whatever Jack and Maddie are about to do to that robot, and he knows they've altered the gun because he can hear them getting into place, is probably going to make it explode.
With Ecto contaminated shards.
Vlad doesn't curse. He doesn't have time to. He has no idea where the other, useless heroes are and he doesn't care.
He darts forward, between the legs of the monstrosity that Jack and Maddie built, gets grazed by an attempted shot, dodges another, and almost gets stepped on when Jack finally fires the anti-tank gun into it's side.
He grabs Superman, hoists the big lug over his shoulders, and books for the door.
He only barely makes it in time.
The robot explodes behind him, with the gunshots continuing throughout as Jack makes sure there's nothing left.
He has no doubt Maddie is handling the AI portion of it.
He unceremoniously drops Superman to the ground and turns to help them.
They wrap it up in time for other heroes to finally step in, the useless troglodytes.
But by the time he gets home three days later, it's the worst case scenario for him.
The Justice League has turned their attention to him, so that they can thank him for saving one of their own.
It starts out with mentioning him in press conferences. Then it branches out into Superman going out of his way to thank him. Then Superman and other heroes are inviting him to...to cookouts?
All of them know his name. All of them want to talk to him.
This is bad, because Vlad's a criminal. He knows it, Maddie knows it (but not the extent of it), Daniel knows it.
He has...no idea how long he can hide from them that he's technically what they would consider a villain.
Or; Superman gets saved by a villain that the JLD is investigating, and along with Flash, thinks the guy can probably be redeemed if he has a support network filled with good influences.
As a result, while the JLD continue their investigation, he and other JL heroes make sure to constantly remind Masters that they're there if he wants to talk or hang out.
Even if he gets charged/punished, they're hoping they can rehabilitate him just a little bit. After all, he went out of his way, without using his powers, which the JLD reassure them he definitely has, to save Superman. There's gotta be a little good in him.
On the flip side, Vlad is Freaking Out, because as a villain being constantly surrounded by do-gooders with the connections required to ruin his hard-built empire is so stressful he's starting to develop an ulcer.