Try these guys: Black Hornet, Black Adam, members of the CRIME SYNDICATE, Bizarro Supergirl, Bizarro Superboy, Match, White Canary, Kestrel...
Only thing i could think of adding to this list is Faker.
Cassandra Nova, Mister Terrible, Anti Venom
Sabertooth as Wolverines reflection?
Nice list...never heard of wraith
What about Red Hulk, Batzarro, Crimson Dynamo, Iron Monger, Vengeance, Frightful Four, Circle of Four, Black Flash, Black Surfer, Hellverine, Jigsaw (The Punisher villain, not the SAW guy)
And Deathstroke and Killer Moth for Batman
Good point. Good list.
What about Ragnarok as an evil version of Thor.