The following contains spoilers for Action Comics #1045, now on sale from DC Comics
Superman's rogues' gallery has it rough in the DC Universe when they face off with the Man of Steel -- especially when the rest of the Superman Family gets involved. When one of them is in trouble, the others are more than willing to hurt the people responsible.
In the case of "A World Without Clark Kent: Part Two" (by Phillip Kennedy Johnson, David Lapham, Trish Mulvihill, and Dave Sharpe) from Action Comics #1045, Conduit, aka Kenny Braverman, decides to stir up some trouble and enrages the entire family. This makes him the dumbest villain in the DC Universe by default.
"A World Without Clark Kent: Part Two" largely focuses on Lois Lane and Steel's research on the Genesis Reactor and the Genesis Fragment found earlier in the year. Natasha Irons -- communicating from Warworld -- thinks the Genesis Fragment might be the key to empowering Superman and the Phaelosians who are stuck powerless on Warworld. This could be the way to turn the tide against Mongul and his forces. But their conversation is interrupted by Conduit, a minor villain in the grand scheme of things.
Kenny Braverman was introduced in the Post-Crisis DC Universe as a largely unknown rival to Clark Kent, whose life was repeatedly and (mostly) unintentionally upended by Kent. This results in him becoming a villain until he died in battle. He's been seen in other media since then in his civilian form, usually portrayed as a bully to a young Clark Kent.
Now, Conduit has officially returned, and he quickly becomes a wrench in the plans to help Superman on Warworld. Although Lois and Steel are able to hurt him, Conduit escapes with the Genesis Fragment that was fueling the generator. This leads Lois to make a call to the rest of the Superman family.
Lois sends a distress call to her son and current Superman, Jon, as well as Kong Kenan (Super-Man), Kara Zor-El (Supergirl), and Conner Kent (Superboy). All of them are informed of Conduit's actions, and told the only way to ensure Superman's victory on Warworld is to get the Genesis Fragment back to Steel in time to finalize the process to empower the people trapped on Warworld. In effect, Conduit just found a way to put a giant blaring target on his back. With the entire Superman Family hunting him, there is nowhere for him to hide.
Honestly, there might not be any DC villain in the universe who is more doomed than Conduit. Some of the planet's strongest beings are hunting him down. But that doesn't even compare to the kind of grudge the Superman family would hold against him if his intervention actually had a notable effect on Superman and the rest of his allies' plight on Warworld. In one move, with a single theft, Conduit just got the most powerful family in the DC Universe gunning for him.