Wikipedia is your somewhat accurate friend
OMAC : http://en.wikipedia.org/wiki/One-Man_Army_Corps
Dr. Fate : http://en.wikipedia.org/wiki/Dr_fate
Blue Beetle : http://en.wikipedia.org/wiki/Blue_Beetle
Booster Gold : http://en.wikipedia.org/wiki/Booster_gold
Ares : http://en.wikipedia.org/wiki/Ares_%28DC_Comics%29
Ocean Master : http://en.wikipedia.org/wiki/Ocean_Master
Spectre : http://en.wikipedia.org/wiki/Spectre_%28comics%29
Bane : http://en.wikipedia.org/wiki/Bane_%28comics%29
Star Sapphire : http://en.wikipedia.org/wiki/Star_Sapphire_%28comics%29
Enjoy, fair bit of reading there.