One of the continuing sagas in the Silver Age Superman was the Anti-Superman Gang. Actually that's probably overstating things a bit; in reality they were just a convenient plot point for Weisinger and his writers.
The Anti-Superman Gang first appeared (as far as I can tell) in Jimmy Olsen #39, and in that story they're something of a sidelight to the main plot. See, Jimmy is so obsessed with making sure that he doesn't lose his signal watch that he hides it someplace while sleepwalking, can't find it the next day, and wears a spare wristwatch. Of course, he ends up having to signal Superman that day several times, and each time he has to come up with a creative means of doing so. At least twice the Anti-Superman Gang tries to steal the (wrong) watch, and in the climax, Jimmy spots the leader of the group, Ace Manton, improbably hiding out at a drive-in movie theater. Oh, and Jimmy finds his wristwatch hidden around his ankle.
The gang apparently didn;t give up after that, as they popped up in Lois Lane #13 a few months later. Lois is wearing a blonde wig in an effort to get a photo of a movie star and his new bride, when two members of the gang spot her. Hey, aside from that blonde hair, she's a dead ringer for Lois Lane and we can use her to get Superman.
Their next appearance was in Action #261. Two visitors to the Fortress of Solitude (which has been transported to Metropolis as an attraction to raise funds for charity) are members of the gang planning to blow up Superman's HQ. The plot is foiled in a typically convoluted fashion. See, the Kandorians had been trying to radio Superman to warn him (they were in deadly danger themselves). But a jewel in the fortress was interfering with the radio signals. Fortunately, the crooks had brought one part of the bomb in a lead-lined container (so Superman couldn't see what was really inside) and when one of the crooks discarded the container it conveniently covered the jewel so the radio waves could get to Superman.
They try their luck against the Fortress of Solitude again in Lois Lane #21. The plot again is absurdly convoluted. An inventor comes up with a Lois Lane doll (possibly inspired by the Barbie phenomenon) that sells like hotcakes. For the 10,000th doll, the inventor plans to make a life-sized Lois doll which will contain a nuclear bomb. See, the inventor is a member of the Anti-Superman Gang, and he correctly reasons that Lois will give the doll to Superman for his memento collection at the Fortress. I'd explain what goes wrong, but it's even more convoluted. We do get to learn the gang's motto:
There were quite a few more appearances of the Anti-Superman Gang--Superman #145 and #152, Jimmy Olsen #75, etc. In Lois Lane #60 we learned the gang had a standing bounty out on Supes and his friends: