Young Justice

[Diamond Cross]

Not sure what you mean about how. I think cloning is sufficiently well-established as a trope that we don't need an explanation on what cloning is. They scraped up some Superman DNA and started a project. What more do we need?

Superboy was cloned because Superman was killed by Doomsday and Cadmus project somehow got a hold of his DNA.

 

[Felon]

BTW, I'd like to mention how much I loved the Cadmus xenomorphs! The design and the abilities of gnomes, trolls and the unnamed "blade" xenos werevery good!

the Popeye arms and legs, the elongated heads...To me, they looked like traditional designs we've seen for aliens and mutant creatures in WB cartoons before. Very Ben 10.

 

[Klaus]

And most Ben10 aliens look pretty cool!