Bizarro
From Superdickery
Bizarro is like a mentally handicapped version of Superman. Other versions of him act as if it is opposite day all the time. "Bizarro" can also be used as a term for anything or anybody acting like Bizarro.
"Bizarro Logic" is a term that is frequently brought up on the Superdickery forum, as members attempt to confuse and annoy each other by finding out how things would work on Bizarro World.
Bizarro had an advice column on the site. Bizarro says it wasn't fun, but it lasted forever.
Silver-Age Bizarro was an imperfect-opposite, and thus wasn't always opposite of Superman, or was opposite in a different way, as opposed to just plain opposite. Modern Bizarro is the exact opposite of Superman, in every way.
Bizarro was probably a sock puppet of Powerslave.