Superboy-Prime

Superboy-Prime is one of the many variations and counterparts of Superman in the DC universe but he became unhinged following the destruction of his world and became one of the main antagonists of the Crisis On Infinite Earths storyline. Plus, also one of the most powerful supervillains in DC Comics.

Why He Sucks

 * 1) At first, he was an unexpected hero from the original Crisis titled Crisis On Infinite Earths, but he was later grabbed by writers in Infinite Crisis and re-tooled into a brainless, self-entitled brat who went on super-powered temper tantrums against comic heroes for not being who he wanted them to be. He is basically a villain. Not even a good villain, a poorly written villain.
 * 2) * In fact, he's one of the worst supervillains of DC comics and is insanely overpowered.
 * 3) * He quickly became a shallow caricature of fans that didn't like the changes writers had made to DC Comics.
 * 4) He has the personality of an angry comic book fanboy during the events of Infinite Crisis.
 * 5) Cheesy, yet awkward dialogue, where he says "I'll kill you, I'll kill you to death!", "No i am a man, a man!", "Everything's better than my earth",and "They're ruining everything".
 * 6) He has got all the powers of the Silver Comic Book Age version of Superman, but he loves to abuse them, and would eventually kill every hero if they attack him.
 * 7) He hates nearly all the superheroes in the DC Universe, and tried to kill most if not all of them, even most of them were innocent.
 * 8) He shows no remorse for any of the evil things he has done.
 * 9) While original Superman was kind superhero, this version is complete opposite as he's a complete monster unlike the original one and is the worst variation of Superman.
 * 10) *He is like this because of the comics he read feature him and his earth destroyed.

The Only Redeeming Qualities:

 * 1) He is much tolerable in the last issues of 2019's Shazam comics series.
 * 2) As mentioned before, his tragic backstory of losing homeworld in the crisis can make some people from diffrent universes feel for themselves.